Protein-Packed Chocolate Banana Mug Cake

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A quick and healthy single-serving chocolate banana cake with added protein powder for a nutritious sweet treat. This american-inspired desserts ready in about 7 minutes layers ripe banana, vanilla protein powder, cocoa powder into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 280 calories and feeds 1, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 5 min Cook: 2 min Serves 1 American cuisine 280 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a microwave-safe mug, mash 1 medium ripe banana with a fork until smooth.
  2. Step 2: Add 2 tbsp vanilla protein powder, 1 tbsp cocoa powder, and 1/4 tsp baking powder to the mug, stirring well to combine.
  3. Step 3: Crack in 1 large egg, then add 3 tbsp almond milk, 1 tbsp honey, and 1/4 tsp vanilla extract. Mix thoroughly until batter is smooth.
  4. Step 4: Microwave on high for 90 seconds to 2 minutes until the cake has risen and is set in the center. Be careful not to overcook.
  5. Step 5: Let cool for 2 minutes before eating directly from the mug or turning out onto a plate.

Frequently asked questions

How long does Protein-Packed Chocolate Banana Mug Cake take to make?

Total time is about 7 minutes (5 min prep + 2 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.

How do I store leftover Protein-Packed Chocolate Banana Mug Cake?

Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.

Can I substitute ingredients in Protein-Packed Chocolate Banana Mug Cake?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Protein-Packed Chocolate Banana Mug Cake for a different number of people?

The recipe is written for 1 servings. Multiply each ingredient by (your serving target / 1). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Protein-Packed Chocolate Banana Mug Cake?

American desserts like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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