Sourdough Discard Mug Cake [quick sourdough recipe] (2024)

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This quick and easy sourdough discard mug cake can be made in under 10 minutes. It's a sourdough microwave mini cake of sorts and is perfect for a fast dessert or even a little mid morning treat with hot coffee for us chocolate lovers!

A speedy take on sourdough chocolate cake, you can make this egg free sourdough starter discard mug cake using any milk you like (even plant based milk so you can make it vegan). It uses simple ingredients you're bound to have in your pantry to create a delicious dessert with the most amazing texture.

Served with a scoop of vanilla ice cream, this sourdough mug cake recipe will become your go to way to use up your sourdough discard.

If you love quick sourdough recipes, you're going to love these no wait sourdough waffles and these chocolate chunk sourdough muffins. You might also like to peruse these 60+ sourdough discard recipes for even more inspiration.

Sourdough Discard Mug Cake [quick sourdough recipe] (1)

Using Sourdough Discard in a Cake

This little sourdough mug cake utilises 40g of sourdough discard per serve. You can of course use active sourdough starter if you have a bit on hand (sometimes I do this if I have a bit leftover from making sourdough bread or sourdough pizza crust).

While this cake uses sourdough discard, you don't want to use sourdough discard that's been sitting around too long and is too sour as it will overpower the flavor of this chocolate cake. I recommend using "fresh" sourdough discard that hasn't been sitting more than 24 hours - but just give yours a sniff if it's a little older and judge it for yourself.

How To Make Sourdough Discard Mug Cake

This sourdough microwave mini cake could not be easier to pull together! You don't even need a bowl - you can mix it all in the mug (although if you are making two or more, I do find it easier to mix it in a bowl and then add the cake batter to the mugs before cooking).

I love that there are so many ways to personalise this easy recipe - from adding raspberry jam or peanut butter to stirring through white chocolate chips or even fresh raspberries. I've put some lovely recipe variations further down - there's sure to be one that takes your fancy!

I've used a 400ml or 13.5oz mug.

  1. Add all the dry ingredients to your mug and mix until well combined.
  2. Now add the milk, oil, sourdough starter and vanilla extract (if using) to the dry ingredients and mix really well until it forms a glossy cake batter. So you are adding all of the wet ingredients to the dry ingredients.
  3. Add a teaspoon of peanut butter or raspberry jam to the top of the cake batter and push down until it's covered.
  4. Place the mug in the microwave for 2 minutes on high power. The sourdough mug cake is done when the cake has risen and is firm to the touch. Please be careful as it will be extremely hot when taking out of the microwave.
  5. Sprinkle with powdered sugar and serve with vanilla ice cream or double cream.
Sourdough Discard Mug Cake [quick sourdough recipe] (2)
Sourdough Discard Mug Cake [quick sourdough recipe] (3)
Sourdough Discard Mug Cake [quick sourdough recipe] (4)

Ingredient Notes

  • All purpose flour works best in this recipe. You can substitute self rising flour if you wish (just leave out the baking powder if you do this or it will overflow in the microwave).
  • You can use any type of sugar you like. I've used white granulated sugar in developing this recipe, but brown sugar, coconut sugar or even maple syrup works well.
  • Unsweetened cocoa powder works best, but this recipe will also work with raw cacao or Dutch processed cocoa.
  • I've used whole milk however this recipe works with any milk, including plant based milk. It's also egg free, so using plant based milk will give you a vegan sourdough mug cake.
  • I've used vegetable oil in this recipe however you can use any light flavored oil you have on hand - just nothing with too strong a flavor or it will ruin the flavor of the cake. Coconut oil works really well with the chocolate flavors in this cake.
Sourdough Discard Mug Cake [quick sourdough recipe] (5)

Flavor Variations for Sourdough Discard Mug Cake

Now this recipe tastes amazing as it is, however, there are lots of things you can add to it to make it taste next level good and enjoy it in different ways:

  • A few tablespoons of chocolate chips (whether white chocolate, semi sweet - whatever you fancy). Just stir them in with the wet ingredients.
  • For a take on a chocolate lava cake, push a few squares of your favorite chocolate into the centre of the cake batter before you cook it. This is a perfect Valentine's Day treat to share with the one you love.
  • Use a teaspoon of your favorite flavor jam - raspberry, strawberry, blueberry all work really well.
  • For a caramel twist, add some caramel sauce to the cake batter just before cooking or add a couple of caramel lollies and push them into the batter.
  • Sprinkle the cooked cake with grated chocolate before enjoying.

Can You Store This Sourdough Mug Cake?

I recommend cooking and eating this sourdough mug cake straight away. The texture can become a bit stodgy if it's left and eaten later, so I don't recommend storing it to eat the next day. The small portions sizes mean it's the perfect size for dessert - with no leftovers or food waste.

Frequently Asked Questions

Do I have to make this recipe in a mug?

No! You can of course use a bowl or any microwave safe container you prefer. A mug does make it easy to remove from the microwave because of the handle.

Can I bake this recipe in the oven rather than cook it in the microwave?

Yes you can cook this recipe in the oven. Use oven safe ramekins or mini cake tins and bake for 20 to 25 minutes at 160C (320F) or until a skewer comes out clean. The cakes will get more of a crunchy top when baked in the oven, but the underneath will still be moist like the microwave version.

Does this recipe work without egg?

Yes this sourdough mug cake has a great flavor and texture without egg. Using the sourdough starter gives the cake a rich, velvety texture. It's also really handy if you can't have eggs, or don't have any on hand, but still want cake!

Sourdough Discard Mug Cake [quick sourdough recipe] (6)

Sourdough Discard Mug Cake

This quick and easy sourdough discard chocolate mug make is perfect for a quick dessert or a little mid morning treat. Add some jam or peanut butter to amp up the flavor!

3.79 from 75 votes

Print Recipe Pin Recipe

Prep Time 5 minutes mins

Cook Time 2 minutes mins

Total Time 7 minutes mins

Course Dessert, Snack

Cuisine American

Servings 1 person

Calories 294 kcal

Equipment

  • 1 Microwave Safe Mug (400ml or 13.5oz capacity)

Ingredients

  • 25 g All Purpose Flour
  • 10 g Cocoa Powder
  • 25 g Sugar
  • 3 g Baking Powder
  • pinch Salt
  • 40 g Sourdough Starter (discard - not too sour)
  • 35 g Milk (any milk you like dairy or plant based)
  • 20 g Vegetable Oil
  • ½ tsp Vanilla Extract (optional)
  • 1 tsp Raspberry Jam (optional) (peanut butter or caramel sauce work well too)

Instructions

  • Add all the dry ingredients to your mug and mix until well combined.

  • Now add the milk, oil, sourdough starter and vanilla extract (if using) to the dry ingredients and mix really well until it forms a glossy cake batter.

  • Add a teaspoon of peanut butter or raspberry jam to the top of the cake batter and push down until it's covered.

  • Place the mug in the microwave for 2 minutes on high power. The sourdough mug cake is done when the cake has risen and is firm to the touch. Please be careful as it will be extremely hot when taking out of the microwave.

  • Serve with vanilla ice cream or double cream.

Notes

Sourdough Discard - I have used sourdough discard that is "fresh" and not more than 24 hours old. I don't recommend using old discard for this recipe as the sourness can really overpower this cake.

Flavor additions - you can choose to leave out the raspberry jam or you could use caramel or chocolate sauce, different flavored jams, peanut butter or even a few squares of your favorite chocolate. You can also stir through dried fruit, nuts, chocolate chips or even m&ms! Yum!

Milk - you can use any milk you like. I've made this with whole milk but non dairy, plant based milks are also fine.

Mug Size - I made this recipe in a mug that holds 400mls or 13.5 oz. This was the perfect size as the cake cooked with room left in the mug for a big scoop of ice cream. You can easily double this recipe - I double the ingredients and mix in a small bowl before transferring to two mugs.

Nutrition

Calories: 294kcalCarbohydrates: 65gProtein: 7gFat: 3gSaturated Fat: 2gPolyunsaturated Fat: 0.2gMonounsaturated Fat: 1gCholesterol: 4mgSodium: 337mgPotassium: 241mgFiber: 5gSugar: 31gVitamin A: 57IUVitamin C: 1mgCalcium: 238mgIron: 3mg

Keyword Sourdough Discard

Tried this recipe?Share your creation with us @ThePantryMama or tag #thepantrymama!

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How To Add Sourdough Discard To Any Recipe »

Reader Interactions

Comments

  1. Sourdough Discard Mug Cake [quick sourdough recipe] (8)Stella Lim

    I don’t have baking power, can I use baking soda? If yes, what qty should I use? Thanks.

    Reply

    • Sourdough Discard Mug Cake [quick sourdough recipe] (9)The Pantry Mama

      no it needs to be baking powder 🙂

      Reply

  2. Sourdough Discard Mug Cake [quick sourdough recipe] (10)Susan

    We have no microwave. Can this me done in oven?

    Reply

    • Sourdough Discard Mug Cake [quick sourdough recipe] (11)The Pantry Mama

      Yes there are instructions for the oven in the post x

      Reply

  3. Sourdough Discard Mug Cake [quick sourdough recipe] (12)Giulie

    Sourdough Discard Mug Cake [quick sourdough recipe] (13)
    The texture was light and delicious. Because the recipe was for one mug cake, I doubled it. Unfortunately I must have used a mug that was not large enough (thought it was), so the first one I did overflowed. I transferred the second one into a jumbo-sized mug and that worked out fine.
    I think if I do this again, I will use this recipe to make two mug cakes and that would be PLENTY of cake. I recommend adding chocolate chips and the raspberry jam - otherwise it's a very plain chocolate cake.
    Thank you!

    Reply

  4. Sourdough Discard Mug Cake [quick sourdough recipe] (14)Sharon Quick

    Sourdough Discard Mug Cake [quick sourdough recipe] (15)
    Tried this tonight in a 14oz wider base mug; I microwaved 1:50 at power level 8 and it was perfect consistency. I think I would add 50pct more sugar though 🤪

    Reply

  5. Sourdough Discard Mug Cake [quick sourdough recipe] (16)Vickie

    I really struggle with the conversion from grams to oz/cups. Any suggestions? I know some sites have converters built in. Would you ever consider this? I love your recipes but I have not successfully made one yet.

    Reply

    • Sourdough Discard Mug Cake [quick sourdough recipe] (17)The Pantry Mama

      It's really important to weigh ingredients rather than use volume measures like cups. I highly recommend getting a scale and giving it a try. You'll find that your baking is much more accurate and you'll have better success 🙂 You can see why it's so important to weigh ingredients here.

      Reply

Leave a Reply

Sourdough Discard Mug Cake [quick sourdough recipe] (2024)

FAQs

How quickly do you need to use sourdough discard? ›

I recommend keeping sourdough discard for about one week, but I do know others who keep it for much longer. After one week, there is a higher risk of mold or bad bacteria growing on the discard.

Do I need to feed my sourdough discard before baking? ›

Absolutely! A jar of sourdough discard serves as an insurance policy against starter death. If you have some discard on hand, remove a spoonful of it and feed it fresh flour and water in a clean jar. You should have a bubbly starter ready to bake with after a couple of feedings, depending on the discard's condition.

Can I bake sourdough discard by itself? ›

#3 Sourdough Flavor, No Flour Added

Similar to case #2, above, discarded sourdough is used in recipes with no additional flour called for, so it can be baked immediately. The discarded starter's flour is already fermented and it adds sourdough flavor to the recipe.

Can you make more sourdough starter from discard? ›

Yes, you can give your friend a portion of sourdough discard to start their own sourdough starter, however it's best if your starter is mature (at least 3 months old) when you do this, so that your friend can start baking straight away.

Can you use a day 1 sourdough discard? ›

Remember, you can't use the discard from your homemade sourdough starter for the first 7 days. You can use sourdough discard in all kinds of sourdough discard recipes, including these no wait sourdough recipes, overnight sourdough discard recipes and sourdough discard recipes that use up a lot of discard.

How to know if sourdough discard is ready to use? ›

You can store mature sourdough discard in the refrigerator indefinitely. As long as there is no mold, it is good to use. It may develop a grayish liquid on top called “hooch” which can be poured off before use or stirred in.

Can I leave sourdough discard out overnight? ›

I left my sourdough discard out at room temperature for a few days. Is it okay? As long as your kitchen isn't too warm (I'd say 78°F or higher) your starter/discard will be fine stored at room temperature for at least a few days without feeding. The flavor will get more acidic the longer it sits.

What happens if you forgot to discard starter before feeding? ›

If you didn't discard a portion of your starter each time you feed it, two things would happen: Your starter would grow to an enormous, unmanageable size. Your starter would likely become more and more inhospitable to the bacteria and yeast we want as the mixture would become ever more acidic.

Does sourdough discard have to be active? ›

One note: Don't start using your discard until your starter is really up and running. In other words, if you've just started your starter and it's not yet established, then you shouldn't save that discard. Wait until you have a healthy, active sourdough starter, then keep any discard from routine feedings.

How long can you keep sourdough discard before it goes bad? ›

Sourdough discard only lasts a day or two at room temperature. As such, it is best to keep your discard in the fridge, where it will last for up to one week. Of course, you can only rely on it lasting that long if you store it correctly.

Is sourdough discard healthy? ›

Conclusion. In conclusion, sourdough discard is a versatile, flavourful, and healthy ingredient that can enhance a wide range of recipes.

Why use sourdough discard in baking? ›

More Moisture: Adding discard to recipes adds extra moisture to the baked good. This can make for delicious muffins, pancakes, waffles and more! Flavor: Discard has gone through the fermentation cycle and typically has a more sour flavor from the bacteria.

Can I put all my sourdough discard together? ›

Can you add sourdough discards together in the same jar? Yes you can add sourdough discards from different days together in the same jar. You just need to make sure you stir it well and you don't leave it sitting in the fridge for too long. Sourdough discard should be used within two weeks.

Do you discard sourdough every time you feed? ›

And at each feeding, you hold onto 1/2 cup of your original starter, discard the rest, and then add its same weight in water and flour. With this schedule, you'd discard almost a cup of sourdough starter every day. While a cup might not seem like a lot at first, it can quickly add up.

Why is my sourdough starter bubbling but not rising? ›

If your starter gets completely covered on top with bubbles but does not rise, it is healthy but may just be a wet mix. Try reducing the water in your next feeding and see if you have different results. Also, the type of flour you are using can impede the rise of your starter.

Can you use 2 week old sourdough discard? ›

Therefore, you can store discard indefinitely, but I suggest using discard within 1-2 weeks. Over time, the discard will become more sour-tasting as it continues to ferment and develop lactic acid. That's why I like to use fresh discard for more sweet recipes, and older discard for more savory recipes.

How long is sourdough discard good for at room temperature? ›

Generally, I keep my sourdough discard cache for up to 2 weeks. Theoretically, you could keep it for far longer, even up to a month, but I've found that after this time, the mixture starts to separate, get overly acidic, and the jar sometimes gets a little funky overall.

How soon after feeding sourdough starter can I use it? ›

Once your starter is reliably doubling in size within 8 hours of being fed, it's ready to bake with — or store for future use. If you plan on refrigerating your fed starter, let it rest at room temperature for 2 hours after its feeding before stashing it in the fridge.

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