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Quick Banana Peanut Butter Mug Cake

A high protein, single serve banana peanut butter mug cake with a molten peanut butter center. Microwave or bake for a cozy snack in minutes.
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Prep Time 2 minutes
Cook Time 15 minutes
Total Time 17 minutes
SERVINGS: 1 mug

Ingredients

  • 1/2 banana ripe and mashed
  • 1 egg
  • 1 scoop vanilla or unflavored protein powder
  • 1 tbsp almond flour
  • 1 tbsp maple syrup
  • 1/4 tsp baking powder
  • 1/2 tsp vanilla extract
  • Pinch of salt
  • 1 tbsp peanut butter for the molten center
  • 1-2 tbsp milk of choice if batter is thick
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Instructions

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  • In a mug or small bowl, mash banana and mix in egg, maple syrup, and vanilla.
  • Stir in protein powder, almond flour, baking powder, and salt until just combined.
  • Add milk if needed for a cake-batter consistency.
  • Pour half the batter into a greased mug or ramekin. Add the peanut butter in the center, then top with remaining batter.
  • Microwave for 60–75 seconds or bake at 350°F for 15–18 minutes until just set on top.
  • Let cool slightly and enjoy warm!

Notes

• Start with less microwave time and increase gradually to avoid overcooking.
• Use a large mug or ramekin to prevent overflow.
• Let the mug cake rest for one to two minutes before eating for best texture.
• Add milk if the batter looks thick, especially when using absorbent protein powders.
• Best eaten fresh, but leftovers can be refrigerated for up to 2 days and reheated gently.

Nutrition

Serving: 1 | Calories: 435kcal | Carbohydrates: 40g | Protein: 31g | Fat: 18g | Saturated Fat: 4g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 6g | Trans Fat: 0.02g | Cholesterol: 227mg | Sodium: 322mg | Potassium: 556mg | Fiber: 3g | Sugar: 24g | Vitamin A: 300IU | Vitamin C: 5mg | Calcium: 303mg | Iron: 2mg