There’s something incredibly comforting about a warm dessert that comes together in a matter of minutes. Picture this: a rainy afternoon where all I craved was something sweet but didn’t want to put in hours of work in the kitchen. That’s when I decided to whip up my favorite Banana Nut Mug Cake. The delightful aroma of ripe bananas mingling with the rich scent of cinnamon fills the air as the mug spins in the microwave.
This isn’t just any mug cake; it’s a perfect blend of moist banana goodness, toasted walnuts, and a drizzle of caramel that feels like a warm hug in a cup. Best of all, it meets those busy moments by transforming simple ingredients into a delicious treat in just 7 minutes! Whether you’re looking for a quick solo dessert or a little indulgence to share, this easy recipe is sure to become a staple in your kitchen. Let’s dive in and discover how simple it is to bring joy to your plate with this scrumptious Banana Nut Mug Cake!
Why is this Banana Nut Mug Cake a must-try?
Simplicity at its finest: This recipe comes together in just 7 minutes, making it perfect for those busy days. Irresistible flavor: The combination of ripe bananas, cinnamon, and crunchy walnuts creates a mouthwatering treat. Perfect portion: Designed for two servings, it’s ideal for sharing or enjoying alone. Effortless clean-up: With just a mug and a few ingredients, you’ll spend less time cleaning and more time indulging. Endless variations: Mix in chocolate chips or add a scoop of ice cream for an extra special touch!
Banana Nut Mug Cake Ingredients
For the Batter
• 2 very ripe bananas – mashed for natural sweetness and moisture.
• ¼ cup light brown sugar – packed, adds caramel notes that enhance the banana flavor.
• 2 tablespoons unsalted butter – melted, helps create a rich and moist texture.
• 2 tablespoons whole milk – brings creaminess into the batter.
• ½ teaspoon vanilla extract – for a warm, inviting aroma that pairs perfectly with banana.
• ¾ cup all-purpose flour – gives structure to your banana nut mug cake.
• 1 teaspoon baking powder – ensures the cake rises beautifully in the microwave.
• ½ teaspoon ground cinnamon – adds warmth and enhances the overall flavor profile.
• ¼ teaspoon kosher salt – balances the sweetness and brings out the flavors.
• ¼ cup chopped walnuts – provides a delightful crunch; feel free to add more for topping!
For the Topping
• Caramel sauce – for drizzling, it adds a luxurious finish to your delightful banana nut mug cake.
Whip up these simple ingredients and treat yourself to a delicious homemade dessert that truly highlights the flavors of bananas!

How to Make Banana Nut Mug Cake
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Prepare the Mugs: Lightly spray two 12-ounce microwave-safe mugs with nonstick cooking spray. This will help the banana nut mug cake slide right out and ensure easy clean-up.
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Mix the Wet Ingredients: In a medium bowl, combine the mashed bananas, brown sugar, melted butter, milk, and vanilla extract. Stir until smooth, allowing the sweetness of the bananas to infuse the mixture beautifully.
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Add the Dry Ingredients: Sprinkle in the flour, baking powder, cinnamon, and salt. Gently stir just until combined, being careful not to overmix—this will keep your mug cake fluffy and light!
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Fold in the Walnuts: Carefully fold in the chopped walnuts until they are evenly distributed throughout the batter, adding delightful texture to every bite.
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Assemble the Mugs: Divide the batter evenly between the two prepared mugs, and add more walnuts on top if desired for an extra crunch.
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Microwave to Perfection: Microwave each mug separately for 90 to 120 seconds. Check for doneness by ensuring the center is set; if not quite ready, continue microwaving in 10-second intervals until cooked through.
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Drizzle and Serve: Drizzle with caramel sauce before serving. Enjoy warm, a treat that’s as comforting as a hug in a mug!
Optional: Top with a scoop of ice cream for an extra indulgent touch.
Exact quantities are listed in the recipe card below.
Banana Nut Mug Cake Variations
Feel free to get creative with your Banana Nut Mug Cake by trying these delightful modifications!
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Gluten-Free: Substitute all-purpose flour with a gluten-free flour blend to make this treat suitable for gluten-sensitive friends.
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Nut-Free: Replace walnuts with sunflower seeds or omit them altogether for a nut-free version that’s just as delicious.
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Vegan: Use flax eggs (1 tablespoon flaxseed meal + 2.5 tablespoons water) instead of eggs, swap butter for coconut oil, and use almond milk.
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Chocolate Explosion: Add 2 tablespoons of chocolate chips to the batter for an indulgent chocolate twist that pairs beautifully with bananas.
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Spicy Cinnamon: Amplify the flavor by adding a pinch of cayenne pepper along with the cinnamon for a surprisingly warm kick.
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Fruit Fusion: Toss in half a cup of berries or chopped apples along with the bananas for extra fruity goodness that brightens each bite.
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Toffee Flavor: Mix in some toffee bits into the batter for a luscious flavor and texture upgrade that will surely satisfy your sweet tooth.
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Maple Drizzle: Instead of caramel, drizzle pure maple syrup over your cake before serving for a delightful twist that balances wonderfully with the bananas.
Make Ahead Options
These Banana Nut Mug Cakes are perfect for busy home cooks looking to save time without sacrificing flavor! You can prepare the batter up to 24 hours in advance by mixing the mashed bananas, brown sugar, melted butter, milk, vanilla, flour, baking powder, cinnamon, salt, and walnuts in a bowl. Store the mixture in an airtight container in the refrigerator to maintain freshness. When you’re ready to indulge, simply divide the batter into your prepared mugs, microwave each for 90 to 120 seconds, and drizzle with caramel sauce before serving. This way, you’ll have a delightful dessert that tastes just as delicious, with minimal effort on those hectic days!
What to Serve with Banana Nut Mug Cake?
Nothing completes a cozy dessert like the right sides to accompany your mug cake masterpiece.
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Whipped Cream: A dollop of fluffy whipped cream adds a light, airy contrast that balances the rich flavors of the mug cake.
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Ice Cream Scoop: A scoop of vanilla or caramel ice cream melting on top transforms your mug cake into an indulgent sundae experience.
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Fresh Berries: Tart strawberries or raspberries offer a fresh, fruity contrast that brightens the dish and enhances its sweetness.
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Cinnamon Sugar Dusting: Sprinkling a bit of cinnamon sugar on top before serving gives an extra touch of warmth that draws out the spice in the cake.
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Coffee or Tea: Enjoying a warm cup of coffee or a soothing herbal tea pairs beautifully with dessert and enhances that comfy vibe.
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Chocolate Drizzle: For chocolate lovers, a drizzle of melted chocolate over the caramel adds a decadent touch that makes each bite even more irresistible.
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Nutty Granola: A sprinkle of nutty granola on top gives extra crunch and elevates the health factor of your treat.
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Caramel Sauce: Extra drizzle of caramel sauce not only brings out the sweetness but adds a luxurious finish that elevates your dessert experience.
These delightful combinations will elevate your mug cake into a memorable treat, perfect for sharing or diving into solo!
How to Store and Freeze Banana Nut Mug Cake
Room Temperature: Enjoy your Banana Nut Mug Cake fresh right away, as it’s best served warm directly from the microwave.
Fridge: If you have leftovers, store them in an airtight container in the fridge for up to 3 days. Reheat in the microwave for about 15-30 seconds to enjoy the warm, comforting flavors again.
Freezer: For longer storage, wrap the cooled mug cake in plastic wrap and place it in a freezer-friendly bag. It can be frozen for up to 1 month. Thaw overnight in the fridge before reheating.
Reheating: When ready to enjoy, microwave your mug cake for 30-45 seconds until warmed through. A drizzle of fresh caramel sauce can enhance the flavor once more!
Expert Tips for Banana Nut Mug Cake
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Choose Ripe Bananas: Ensure your bananas are very ripe for maximum sweetness and moisture; they should be speckled with brown spots for the best flavor.
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Don’t Overmix: Mix just until combined to avoid a dense cake; this is key to achieving the perfect fluffy texture in your Banana Nut Mug Cake.
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Microwave Timing: Start microwaving at 90 seconds, then check for doneness. Every microwave is different, so adjust accordingly in 10-second intervals to prevent overcooking.
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Customize Ingredients: Feel free to substitute walnuts with pecans or chocolate chips for a delightful twist; just remember to maintain the same measurements!
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Serve Warm: Enjoy your Banana Nut Mug Cake straight out of the microwave for that irresistible warm and gooey experience; it won’t taste the same once cooled!
Banana Nut Mug Cake Recipe FAQs
What kind of bananas should I use for the Banana Nut Mug Cake?
Absolutely! Use very ripe bananas, ideally with plenty of brown spots or even some blackening. The ripeness is key as it adds natural sweetness and moisture, which enhance the flavor and texture of your mug cake.
How should I store leftover Banana Nut Mug Cake?
If you have leftovers, store the mug cake in an airtight container in the fridge for up to 3 days. When you’re ready to indulge again, simply reheat in the microwave for 15-30 seconds so it retains that comforting warmth and gooey goodness!
Can I freeze my Banana Nut Mug Cake?
Yes, you can! To freeze, allow the mug cake to cool and then wrap it tightly in plastic wrap. Place it in a freezer-friendly bag, and it can last up to 1 month. When you’re ready to enjoy, thaw it overnight in the fridge and reheat for about 30-45 seconds until warm.
What should I do if my mug cake isn’t cooking evenly in the microwave?
Very! If you find it isn’t cooking evenly, check your microwave’s power level. Some microwaves may cook more intensely. Make sure to microwave in 10-second intervals to prevent overcooking and ensure that you’re checking for doneness.
Are there any dietary considerations for this recipe?
The Banana Nut Mug Cake contains gluten from all-purpose flour and walnuts, so it’s not suitable for those with gluten allergies or nut allergies. If you need alternatives, you can use gluten-free flour and replace walnuts with seeds (like sunflower seeds) for a nut-free version. Always check labels if sharing with friends or family with dietary restrictions!

Indulgent Banana Nut Mug Cake in Just 7 Minutes
Ingredients
Equipment
Method
- Lightly spray two 12-ounce microwave-safe mugs with nonstick cooking spray.
- In a medium bowl, combine the mashed bananas, brown sugar, melted butter, milk, and vanilla extract. Stir until smooth.
- Sprinkle in the flour, baking powder, cinnamon, and salt. Gently stir just until combined.
- Carefully fold in the chopped walnuts until they are evenly distributed throughout the batter.
- Divide the batter evenly between the two prepared mugs, and add more walnuts on top if desired.
- Microwave each mug separately for 90 to 120 seconds. Check for doneness; keep microwaving in 10-second intervals if needed.
- Drizzle with caramel sauce before serving. Enjoy warm!