Flourless Peanut Butter Mug Cake

The other day my brother told me he is sick of my mug cake posts. I’m not tired of them yet though. Hopefully you aren’t either. I love that they are fast, especially since I haven’t had time to do a lot of baking. And the one serving size is perfect because nothing gets wasted.

I’ve made a flourless nutella mug cake and a flourless chocolate cake. So the other day I decided to try making a flourless peanut butter mug cake.

Surprisingly, the flourless peanut butter mug cake rose quite high when cooking in the microwave. The other flourless cakes were much more dense. It almost looks like a regular peanut butter mug cake, except there’s no flour.

The cake is very moist and is perfect for peanut butter lovers. And as a bonus, I have another gluten free recipe to add to my collection.


If you enjoy mug cakes, you can view my whole mug cake series here.

Flourless Peanut Butter Mug Cake


2 tbsp of peanut butter
1 tbsp sugar
¼ tsp baking powder
1 tbsp heavy cream
1 large egg


1. Mix all ingredients into a mug. Stir with a small whisk or fork.
2. Microwave for about 1 min. Check on the cake. If not done, cook for an additional 15-30 seconds.

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