Chocolate Protein Mug Cake
A rich, gooey chocolate cake made in a mug in 90 seconds, with whey, cocoa and Greek yogurt doing the heavy lifting. Dessert with 40 g protein and no oven required.
- Prep
- 3 min
- Cook
- 2 min
- Serves
- 1
- Level
- easy

Photo: Mimschka · CC BY-SA 4.0
Method
- 1
In a large microwave-safe mug, whisk the whey, cocoa, oat flour, baking powder and sweetener with a fork so there are no lumps.
- 2
Add the egg, yogurt and milk and mix until smooth and glossy, scraping the bottom of the mug. Drop the chocolate chips on top.
- 3
Microwave on high for 60 seconds, then in 15-second bursts until risen and just set on top but still fudgy in the middle — overcooked whey turns rubbery.
2 min - 4
Rest for a minute, then eat from the mug or turn out onto a plate with a spoon of Greek yogurt and berries.
Watch how it's made
Hand-picked videos of this dish or its classic version. Their quantities differ, so follow ours for the macros above.
My 3 Best PROTEIN Mug Cakes | Healthy Low Carb Protein Dessert for Weight Loss!
Lacey Baier · YouTube
Protein Powder Mug Cake
Mackenzie Burgess, RDN · YouTube
Substitutions
- Egg-free: replace the egg with 40 g mashed banana and add 1 extra tbsp milk.
- Lower-carb: swap the oat flour for 15 g almond flour (−7 g carbs, +6 g fat).
- Oven version: bake in a greased ramekin at 180°C (350°F) for 12–14 minutes.
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