This quick and cozy Banana Bread in a Mug is the perfect way to enjoy a warm, comforting treat in no time. With mashed banana, flour, and a touch of cinnamon, all the flavors of classic banana bread come together in just minutes.
The best part? You make it right in the mug—less mess, less cleanup. It’s the perfect excuse for banana bread any time of day—whether it’s breakfast or dessert!
Key Ingredients & Substitutions
Ripe Banana: The star of the show! A banana with brown spots is naturally sweeter and mashes easily. No bananas? Unsweetened applesauce can work in a pinch and offers a lighter option.
Butter or Coconut Oil: Adds richness and moisture. Melted butter gives great flavor, but coconut oil is an awesome dairy-free swap. You can also use a mild oil like canola or vegetable oil if needed.
Egg: Helps bind everything and adds moisture. For a vegan version, replace it with a flax egg (1 tbsp ground flaxseed + 2.5 tbsp water) or use ¼ cup plain yogurt.
All-Purpose Flour: Provides structure to the mug bread. Want it gluten-free? Try a gluten-free blend or almond flour—just adjust the cook time slightly as needed.
Brown Sugar or Honey: Adds sweetness—brown sugar gives a richer taste, while honey feels a bit lighter. Maple syrup or agave nectar also work well; just reduce other liquids slightly.
Optional Add-ins: Chocolate chips and chopped walnuts are delicious in this! You can also switch things up with dried fruit, pecans, or a dash of cinnamon.
How Do I Microwave It Just Right?
Microwaves vary, so getting the perfect texture takes a little attention:
- Start with 1 minute and check the texture.
- If it’s still undercooked, continue in 15-second bursts.
- It should puff up and look set in the middle.
- A toothpick should come out clean or with a few moist crumbs.
- Let it rest for a minute—it sets and becomes easier to eat.
Want to go a step further? Add a spoonful of peanut butter or yogurt on top. Instant upgrade!
How to Make Banana Bread in a Mug
Ingredients You’ll Need:
- 1 ripe banana, mashed
- 1 tablespoon melted butter or coconut oil
- 1 egg
- 3 tablespoons all-purpose flour
- 2 tablespoons brown sugar or honey
- ¼ teaspoon baking powder
- Pinch of salt
- 2 tablespoons chocolate chips (optional)
- 2 tablespoons chopped walnuts (optional)
Step-by-Step Instructions:
1. Mash the Banana:
Place a ripe banana in your mug and mash it with a fork until smooth. This forms the base of your mug bread.
2. Mix in the Butter:
Add melted butter or coconut oil and stir it into the banana until combined. It should be creamy and smooth.
3. Add the Egg:
Crack the egg into the mug and whisk it in well. The mixture should be fully combined and slightly fluffy.
4. Combine the Dry Ingredients:
Stir in the flour, sugar (or honey), baking powder, and a pinch of salt. Mix until everything is fully incorporated into a batter.
5. Add Fun Extras:
If you’re adding chocolate chips or walnuts, gently fold them in now so they’re evenly spread throughout.
6. Time to Microwave:
Microwave your mug on high for 1 to 2 minutes. Watch as it rises! It should look puffed and slightly firm when done—don’t overcook.
7. Cool and Enjoy:
Let it sit for a minute before eating. This helps the texture settle. For a final touch, sprinkle a bit of sea salt or drizzle with nut butter—delicious!
Can I Substitute the Egg in This Recipe?
Absolutely. Use ¼ cup unsweetened applesauce or a flax egg (1 tbsp ground flaxseed + 2.5 tbsp water, thickened for a few minutes) for an egg-free version. Both keep the bread moist and delicious!
What Should I Do If My Banana Isn’t Ripe?
Not quite ripe yet? Place the banana in a paper bag for a day or two to ripen faster. In a hurry? Microwave it for about 30 seconds to soften it up—just let it cool slightly before using.
Can I Make This Mug Cake Gluten-Free?
Yes! Just use a gluten-free flour blend. Make sure it includes xanthan gum to help with texture. You’ll still get a soft, satisfying result.
How Should I Store Leftovers?
If you have leftovers, let them cool and store in an airtight container in the fridge for up to 2 days. Reheat in the microwave for 30 seconds to 1 minute for that fresh-from-the-oven feel.
