This banana mug cake is ready in minutes and has all the cozy, sweet, delicious vibes of banana bread—no eggs, dairy, or oven needed! It's customizable and works with a variety of different flours and sweeteners.
¼cupmashed very ripe banana - increase by 1 tablespoon if using a granulated sugar
2teaspoonsneutral oil - or 1 tablespoon smooth almond butter
2Tablespoonsmaple syrup - or granulated sugar; see Notes
¼teaspoonvanilla extract
¼cupflour - such as all purpose, whole wheat pastry flour, or oat flour
¼teaspoonground cinnamon
¼teaspoonbaking powder
pinchofsalt
Optional additions:
chopped walnuts or pecans
chocolate chips
Instructions
In a bowl, mash the banana, and measure to make sure you have a full ¼ cup. If using sugar instead of maple syrup, increase the banana by 1 Tbsp. Add the nut butter (or oil), maple syrup (or sugar), and vanilla. Stir with a fork until combined.
Measure the flour by spooning it into a measuring cup and leveling off the top. Add the flour to the bowl, along with the cinnamon, baking powder, and salt.
Stir just until you have a thick batter and there is no visible dry flour. Fold in chocolate chips or chopped walnuts if desired. Transfer the batter to a microwave-safe, standard-size mug (10 oz. or larger). Jiggle the mug to even out the batter.
Note: this recipe was tested in an 1100 watt microwave. Microwave ovens vary, so be sure to keep a close eye on the mug the first time you try the recipe. Start by microwaving on high power for 55 seconds. The mug cake should rise to the top of the mug by the end of that initial 55 seconds, then sink slightly. Microwave again in 10–15 second bursts, until the center looks moist but feels firm when pressed. In my microwave, it comes out just right with a total cook time of 85 seconds.Tip: it's normal for the mug cake to sink slightly even when done, but if it sinks a lot when you open the microwave door, it likely needs another 10–15 seconds. If using a smaller, older, or lower wattage microwave you may need to add more time.
Let sit 5–10 minutes, then enjoy! For breakfast it's delicious with a dollop of yogurt. For dessert, enjoy as-is or add a scoop of vanilla ice cream on top while it's still warm. So good!
Notes
Can I use frozen, thawed banana? Yes, I've made it a few times with frozen and thawed banana. A lot of liquid will separate from the banana as it thaws. Just drain away most of it (not all; about ¾), before mashing the banana with a fork.