Healthy Banana Mug Cake Recipe

banana mug cake with a fork in the middle to show the fluffy center texture.

Healthy Banana Mug Cake Recipe

Course: Dessert

Cuisine: American

Keyword: banana mug cake

Prep Time: 5

Cook Time: 2

Total Time: 7

Servings:

Calories: 509kcal

Author: Megan Gilmore

This banana mug cake recipe tastes like a perfect slice of banana bread, only you don't need to wait an hour for it to bake... and even longer for it to cool! It's the perfect treat to make when you have a single banana to use up. This recipe uses oat flour, so it's naturally gluten-free, and you can cook it in two mugs to share or in one big, oversized mug for a single serving.

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Ingredients

1 large banana
1 large egg
1 tablespoon peanut butter
1 tablespoon maple syrup
⅓ cup oat flour
1 teaspoon baking powder
¼ teaspoon ground cinnamon
pinch of salt

Instructions

Place the peeled banana in a large microwave-safe mug (16-ounce or larger) and use a fork to mash until smooth.
Add in the egg, peanut butter, maple syrup, flour, baking powder, cinnamon, and a pinch of salt. Stir well until the mixture looks like a lumpy cake batter. Sprinkle a few chocolate chips or walnuts on top, if you'd like extra texture.
Place the mug in the microwave and cook on high power for 2 minutes. The cake will rise above the top of the mug as it cooks, but it shouldn't spill over as long as you use a 16-ounce or larger size mug. The cake should feel firm to the touch in the center when it's done cooking; add another 30 seconds of cook time if you need to.
Carefully remove the mug from the microwave (it will be hot!) and let it cool for 5 minutes before digging in.

Video

Notes

Nutrition information is for a single serving without the optional toppings. This information is automatically calculated and is just an estimate, not a guarantee.

Oven Directions: Preheat the oven to 350ºF. Place the oven-safe mug on a baking sheet for easy removal (this will ensure the mug doesn't tip over on a wire shelf). Bake for 35 minutes, or until a toothpick comes out clean from the center of the cake. Let it cool for 5 minutes before serving.

Mug Cake for Two: If you want to make a snack-size portion or have smaller mugs to work with, divide this batter into two 10-ounce coffee mugs and cook them simultaneously for 2 minutes in the microwave.

Update Note: This recipe was updated in July 2023 to use a microwave and turn out more like banana bread. Find the original recipe here if you prefer the flourless oven-baked version, which does not work in a microwave.

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