Recipe Details

Prep Time: 5 minutes
Cook Time: 2 minutes
Air Fryer: 12–15 minutes
Total Time: About 7 minutes
Servings: 2
Difficulty: Easy

Why You’ll Love This Banana Chocolate Cake

• Rich chocolate flavor without needing a complicated recipe.
• Soft and fudgy texture when it is cooked just until set.
• Naturally sweetened mainly with ripe banana.
• No flour required, making it a simple option when you want a quick chocolate treat.
• Ready in minutes and perfect when you want something warm and chocolatey.

Ingredients

For the Cake

• 1 very ripe banana, mashed
• 1 large egg
• 2 tablespoons unsweetened cocoa powder
• 1 teaspoon baking powder
• Pinch of salt
• ¼ cup chocolate chips, plus extra for topping if desired

For the best flavor: use a banana that is very ripe and naturally sweet, with plenty of brown spots. A firm or underripe banana will make the cake taste much less sweet and flavorful.

How to Make Banana Chocolate Cake

1. Mash the Banana

Place the ripe banana in a mixing bowl and mash it thoroughly with a fork until mostly smooth.

A few small pieces are fine, but try to avoid large chunks so the banana blends evenly into the batter.

2. Add the Egg

Add the egg to the mashed banana and whisk until the mixture is well combined and smooth.

3. Add the Cocoa

Add the unsweetened cocoa powder, baking powder, and a pinch of salt.

The salt is important here—it helps balance the banana’s sweetness and brings out the chocolate flavor.

4. Mix Until Smooth

Stir everything together until you have a thick, glossy chocolate batter with no visible pockets of dry cocoa.

Do not overmix once the batter is smooth.

5. Fold in the Chocolate Chips

Gently fold the chocolate chips into the batter.

For an extra chocolatey result, reserve a few chocolate chips to sprinkle over the top before cooking.

6. Transfer to the Baking Dish

Pour the batter into a small microwave-safe square baking dish and spread it into an even layer.

Sprinkle the reserved chocolate chips over the surface if desired.

7. Microwave Until Set

Microwave for approximately 90 seconds to 2 minutes, depending on the strength of your microwave and the size of your dish.

The cake should look set around the edges while the center remains soft and moist.

Avoid overcooking it—the texture becomes much drier if it is left in the microwave too long.

Air Fryer Option

If you prefer to use an air fryer, place the baking dish in a preheated air fryer and cook at:

160°C / 320°F for 12–15 minutes

Start checking at around 12 minutes. Insert a toothpick into the center. It should come out with a few moist crumbs, but not wet batter.

If needed, continue cooking for another 1–3 minutes.

8. Let It Rest

Allow the cake to cool for 2–3 minutes before slicing.

This short resting time helps the center settle while keeping the cake soft and fudgy.

Tips for the Best Flavor and Texture

Use a very ripe banana.
The more ripe and naturally sweet the banana, the better the flavor of the cake.

Choose good cocoa powder.
Since there are only a few ingredients, the cocoa makes a noticeable difference. Use unsweetened cocoa with a rich chocolate flavor.

Don’t overcook it.
This is the most important step for keeping the cake fudgy. The center should be just set, not completely dry.

Don’t skip the chocolate chips.
They add little pockets of melted chocolate throughout the cake and make the flavor much richer.

Let it rest briefly before eating.
A couple of minutes after cooking gives the texture time to settle while keeping the inside moist.

Frequently Asked Questions

Can I make this cake without a microwave?

Yes. Use the air fryer method at 160°C / 320°F for 12–15 minutes.

Can I use a less-ripe banana?

Yes, but the cake will be less sweet and less flavorful. A very ripe banana is best.

Why did my cake turn out dry?

It was most likely overcooked. Microwave power varies, so start checking at 90 seconds.

Can I use dark chocolate chips?

Absolutely. They give the cake a richer and deeper chocolate flavor.

Can I add nuts?

Yes. Chopped walnuts or pecans pair especially well with banana and chocolate.

Store

Allow the cake to cool completely and store it in an airtight container in the refrigerator for up to 3 days.

Warm it gently before serving if you prefer a softer texture.

Serving Suggestions

Serve it slightly warm with:

• Extra chocolate chips
• Fresh banana slices
• Greek yogurt
• Peanut or almond butter