Protein Mug Cake (Chocolate Baked Oats) Recipe
Introduction
This Protein Mug Cake is a quick and satisfying chocolate baked oats recipe perfect for a nutritious breakfast or a healthy snack. Packed with protein and rich cocoa flavor, it’s ready in just minutes using common ingredients.

Ingredients
- 1/2 cup rolled oats
- 2 tablespoons cocoa powder
- 1/2 teaspoon baking powder
- 1/2 banana (super-ripe and spotty)
- 1/4 cup soymilk (any type)
- 1 tablespoon maple syrup (or agave nectar)
- 1 dash vanilla extract
- 2 tablespoons chocolate chips (or chocolate ganache, caramel, or other ooey-gooey center)
Instructions
- Step 1: In a high-speed blender, add the rolled oats and blend until finely ground into a powder resembling flour. Mix in the cocoa powder and baking powder, then set aside.
- Step 2: In a microwave-safe mug or large ramekin, mash the half banana with a fork until smooth with no lumps. Stir in the soymilk, maple syrup, and vanilla extract until combined.
- Step 3: Add the dry oat mixture to the mug and gently mix with a fork just until combined. Avoid over-mixing. Ensure the mug or ramekin is at least twice the size of the batter to allow for rising.
- Step 4: Use a spoon to lift some batter, sprinkle the chocolate chips or your desired filling into the center, then cover with the lifted batter.
- Step 5: Microwave for 2 minutes. Let the mug cake cool for 5 minutes before enjoying.
Tips & Variations
- Try substituting the soymilk with almond, oat, or cow’s milk depending on your preference.
- For extra protein, add a scoop of your favorite protein powder to the dry ingredients.
- Swap chocolate chips for nuts, peanut butter, or fresh berries for different textures and flavors.
- Use a ripe banana for natural sweetness and a moist texture.
Storage
This mug cake is best enjoyed fresh but can be stored in an airtight container in the refrigerator for up to 2 days. Reheat in the microwave for 20-30 seconds before eating to warm it through.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use regular flour instead of oat flour?
Yes, you can substitute with all-purpose or whole wheat flour, but the texture and nutritional profile will differ slightly. Oat flour adds extra fiber and a subtle nutty flavor.
What if I don’t have a microwave?
You can bake the batter in a small oven-safe ramekin at 350°F (175°C) for about 12-15 minutes or until a toothpick comes out clean.
PrintProtein Mug Cake (Chocolate Baked Oats) Recipe
This Protein Mug Cake is a quick and delicious chocolate baked oats recipe, perfect for a wholesome breakfast or a healthy dessert. Using super-ripe banana for natural sweetness and rolled oats ground into oat flour, it’s a nutritious treat that’s ready in just minutes using the microwave.
- Prep Time: 5 minutes
- Cook Time: 2 minutes
- Total Time: 7 minutes
- Yield: 1 serving 1x
- Category: Breakfast
- Method: Microwaving
- Cuisine: American
- Diet: Vegan
Ingredients
Dry Ingredients
- 1/2 cup rolled oats
- 2 tablespoons cocoa powder
- 1/2 teaspoon baking powder
Wet Ingredients
- 1/2 banana (super-ripe and spotty)
- 1/4 cup soymilk (any type)
- 1 tablespoon maple syrup (or agave nectar)
- 1 dash vanilla extract
Optional Center
- 2 tablespoons chocolate chips (or chocolate ganache, caramel, or other ooey-gooey center)
Instructions
- Prepare oat flour: In a high-speed blender, add 1/2 cup of rolled oats and blend until it becomes a fine powder resembling flour. Then add cocoa powder and baking powder and mix well. Set this dry mixture aside.
- Mash banana and mix wet ingredients: In a microwave-safe mug or large ramekin, mash the half-banana thoroughly with a fork until there are no lumps. Add soymilk, maple syrup, and a dash of vanilla extract, mixing until fully combined.
- Combine dry and wet mixtures: Carefully add the prepared oat flour mixture into the mug and mix lightly with a fork just until incorporated. Avoid over-mixing. Ensure your mug or ramekin is at least twice the size of the batter since it will rise significantly during cooking.
- Add surprise center: Using a spoon, lift some batter in the middle and sprinkle chocolate chips or your choice of filling into the center. Cover the center with the lifted batter to encase it inside.
- Microwave and serve: Place the mug in the microwave and cook on high for 2 minutes. Allow the mug cake to cool for 5 minutes before enjoying to let the texture set and avoid burning.
Notes
- You can substitute maple syrup with agave nectar or honey if preferred.
- Ensure the banana is very ripe for natural sweetness and moisture.
- Use a large enough microwave-safe container to prevent overflow as the cake rises.
- Customize the center by adding caramel, chocolate ganache, or peanut butter for variety.
- Cooling time is important to achieve better texture and flavor.
Keywords: protein mug cake, chocolate baked oats, healthy breakfast, quick mug cake, vegan dessert

