Description
This Chocolate Protein Cake is a rich, fudgy, and incredibly moist dessert packed with oat flour and Greek yogurt. By blooming cocoa powder with hot coffee, it achieves a deep bakery-style flavor while providing 15g of protein per slice the perfect guilt-free indulgence.
Ingredients
The Cake Batter
- 3/4 cup oat flour
- 2/3 cup chocolate protein powder
- 1/2 cup cocoa powder
- 1/2 cup Greek yogurt
- 3 eggs
- 1/3 cup butter, melted
- 1/3 cup brown or coconut sugar
- 2 tablespoons maple syrup
- 3/4 cup hot brewed coffee
- 1 teaspoon vanilla extract
- Leavening: 1 tsp baking powder, 1/4 tsp baking soda, 1/4 tsp salt
The Chocolate Buttercream
- 1/2 cup butter, softened
- 1/4 cup cocoa powder
- 2 1/2 cups powdered sugar
- 1 teaspoon vanilla
- 2–4 tablespoons milk (as needed)
Instructions
Prep: Preheat oven to 350°F. Line an 8×8 pan with parchment paper.
Wet Mixture: Whisk sugar, maple syrup, eggs, yogurt, melted butter, and vanilla until smooth.
Dry Mixture: Add oat flour, protein powder, cocoa, baking powder, baking soda, and salt.
Bloom & Whisk: Pour in hot brewed coffee; whisk just until smooth. The batter will be thick.
Bake: Bake for 22–28 minutes until a toothpick comes out clean. Cool completely on a wire rack.
Frost: Beat butter for 2 mins. Add cocoa, then gradually mix in powdered sugar, vanilla, and milk. Whip until fluffy and frost the cold cake.
Notes
Spoon and Level: Always spoon oat flour into the cup to avoid a dense, dry cake.
The Coffee Secret: Hot liquid ‘blooms’ the cocoa powder, releasing more intense flavor without making the cake taste like coffee.
Don’t Overmix: Overworking protein powder can lead to a rubbery texture; whisk only until combined.
- Prep Time: 10 minutes
- Cook Time: 25 minutes
- Category: Dessert / High-Protein
- Method: Baking
- Cuisine: Healthy Comfort
Nutrition
- Serving Size: 1 Slice
- Calories: 310
- Sugar: 22g
- Sodium: 210mg
- Fat: 14g
- Saturated Fat: 8g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 32g
- Fiber: 3g
- Protein: 15g
- Cholesterol: 75mg
Keywords: chocolate protein cake, oat flour cake, healthy chocolate dessert, protein powder recipes, greek yogurt cake, fudgy protein cake, gluten-free protein cake