This banana bread mug cake makes a delicious breakfast, afternoon snack, or late-night dessert. You can mix it directly in a microwave-safe mug to save on dishes. Because this recipe calls for a whole ripe banana and a whole egg, it will fill two coffee mugs that are 10 ounces in size or one large mug that is 16 ounces or larger. If you want to make a large single serving, use an oversized mug to avoid overflow as it cooks in your microwave. (There are oven directions below, too!)
Ingredients You’ll Need
This healthy mug cake recipe calls for oat flour, which you can buy at the store or make at home using your blender. (Just process rolled oats or oatmeal in a blender until it has a fine texture.) Use certified gluten-free oats if you need a gluten-free option. This recipe uses peanut butter instead of vegetable oil, but you can use any other nut or seed butter you like with similar results. You can also add vanilla extract or a pinch of salt to enhance the flavor even more. For added texture, add a handful of walnuts, or make it more of a dessert with a few dark chocolate chips sprinkled on top. It’s easy to customize with the perfect amount of banana flavor.
How to Make Banana Mug Cake
- Mash the banana. To make one large serving, add the peeled banana to a 16-ounce mug and use a fork to mash until it looks relatively smooth.
- Mix the batter. Add the peanut butter, egg, maple syrup, oat flour, baking powder, and ground cinnamon, then stir well. There’s no need to mix the wet ingredients before adding the dry ingredients in this case. The mixture should have a similar consistency to cake batter, but it will be slightly more lumpy because of the mashed banana.
- Cook. Add any toppings you like, such as chocolate chips or walnuts, then place the mug in the microwave and cook at high power for 2 minutes. The center should feel firm to the touch when the cake is done cooking. Depending on the wattage of your microwave, your mug cake might need an additional 30 seconds of cooking. Test the cake with a toothpick if you want to make sure the center is no longer wet. Let the mug cake cool for 5 minutes. (The mug will be very hot!) After that, it’s ready to eat. Before digging in, add any extra toppings you like, such as sliced banana or an extra peanut butter drizzle. Looking for more healthy sweets? Try 5-Minute Freezer Fudge, Banana Ice Cream, or Banana Snack Cake for more options. If you try this banana mug cake recipe, please leave a comment and star rating below letting me know how you like it.
