Microwave banana & walnut cake

This microwave banana and walnut cake is a quick, moist dessert featuring the sweetness of ripe bananas and the crunch of walnuts. Made in just minutes, it's perfect for a last-minute treat.

30 Jan 2026
Cook time 15 min
Prep time 10 min

Ingredients:

1/2 cup butter
3/4 cup brown sugar
2 eggs
3 bananas
1 cup self-raising flour
3/4 cup milk (1% fat)
1/3 cup walnuts
1 cup powdered sugar
2 tbsp lemon juice
Microwave banana & walnut cake

Looking for a quick and delicious dessert that doesn’t require an oven? Try this microwave banana and walnut cake. With its moist texture and rich, nutty flavor, it’s perfect for an impromptu treat or a simple family dessert. Made with common ingredients you probably already have in your kitchen, this recipe is as convenient as it is tasty.

Instructions:

1. Prepare the Ingredients:
- Ensure butter is softened.
- Mash the bananas in a bowl.
- Chop the walnuts if they are not pre-chopped.
- Measure out all other ingredients.
2. Mix Butter and Brown Sugar:
- In a large microwave-safe bowl, beat together the softened butter and brown sugar until creamy and well combined using a hand mixer or a whisk.
3. Add Eggs:
- Beat in the eggs, one at a time, making sure each is fully incorporated before adding the next.
4. Incorporate Bananas:
- Stir in the mashed bananas until the mixture is smooth.
5. Add Dry and Wet Ingredients:
- Gradually mix in the self-raising flour and milk, alternating between the two, beginning and ending with the flour. Mix until just combined.
6. Fold in Walnuts:
- Gently fold in the chopped walnuts into the batter.
7. Microwave Cooking:
- Transfer the batter to a microwave-safe dish (preferably an 8-inch silicone cake pan or microwave-safe glass dish).
- Microwave on high for about 8-10 minutes, or until a toothpick inserted into the center comes out clean. Note: Microwaves vary in power, so you may need to adjust the time accordingly.

8. Cool the Cake:
- Allow the cake to cool completely in the dish.
9. Prepare the Lemon Icing:
- In a small bowl, mix the powdered sugar with lemon juice until smooth.
10. Ice the Cake:
- Once the cake is completely cool, drizzle or spread the lemon icing evenly over the top.
11. Serve:
- Slice the cake and serve. Enjoy your quick and delicious microwave banana & walnut cake!

This microwave banana and walnut cake is a quick and easy way to satisfy your sweet tooth without the hassle of traditional baking. With its rich banana flavor and crunchy walnuts, it’s a dessert that’s sure to please. Don’t forget to share this delicious cake with friends and family—they’ll never guess it was made in the microwave!

Microwave banana & walnut cake FAQ:

What size microwave-safe dish should I use for this cake?

Use an 8-inch silicone cake pan or a microwave-safe glass dish to ensure even cooking and proper rising of the cake.

How do I know when the banana cake is done cooking in the microwave?

The cake is done when a toothpick inserted into the center comes out clean. Cooking times may vary based on your microwave's wattage, so start with 8 minutes and adjust as needed.

Can I substitute the walnuts with another nut or omit them entirely?

Yes, you can replace walnuts with pecans, almonds, or even omit them for a nut-free version. Just keep in mind that this will alter the flavor and texture slightly.

How should I store leftover banana cake?

Store leftover cake in an airtight container at room temperature for up to 2 days, or in the refrigerator for up to 5 days. You can also freeze it for longer storage.

What can I use instead of self-raising flour in this recipe?

To substitute self-raising flour, use all-purpose flour and add 1.5 teaspoons of baking powder and a pinch of salt for every cup of flour.

Tips:

- Make sure to use ripe bananas for maximum sweetness and flavor.

- Toast the walnuts lightly in a pan for a few minutes before adding them to the batter for an extra nutty taste.

- Beat the eggs thoroughly before adding them to ensure a light and fluffy texture.

- Use a microwave-safe dish that is appropriately sized for the batter to avoid overflow.

- Microwave ovens vary, so adjust the cooking time as needed and check doneness by inserting a toothpick into the center; if it comes out clean, the cake is done.

- For an added zest, consider adding a pinch of cinnamon or nutmeg to the batter.

Nutrition per serving

8 Servings
Calories 460kcal
Protein 6g
Carbohydrates 70g
Fiber 1.97g
Sugar 50g
Fat 20g

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