Air Fryer Chocolate Biscuit Cake Recipe

If you’re looking for an easy, no-fuss dessert that’s rich, chocolatey, and guaranteed to impress, this Air Fryer Chocolate Biscuit Cake is the perfect recipe. Made with crunchy tea biscuits, silky melted chocolate, butter, cocoa powder, and condensed milk, this indulgent cake comes together with minimal effort and bakes beautifully in the air fryer.

Unlike traditional sponge cakes, biscuit cake has a delightful texture with crunchy biscuit pieces suspended in a fudgy chocolate filling. It’s perfect for birthdays, tea parties, festive occasions, or simply satisfying your chocolate cravings. Best of all, the air fryer makes the baking process quicker and more convenient than a conventional oven.

Prep Time: 20 minutes

Cook Time: 20–25 minutes

Cooling Time: 1 hour

Total Time: 1 hour 45 minutes

Servings: 8–10 slices

Calories: Approximately 380 calories per slice

Why You’ll Love This Recipe

Rich and chocolatey

Quick and easy to make

Perfect for beginners

Minimal ingredients

Great for celebrations

Family-friendly

Air fryer convenience

Easy to customize

Ingredients

For the Cake

250g digestive biscuits or tea biscuits, roughly broken into bite-sized pieces

200g dark chocolate, chopped

100g milk chocolate, chopped

½ cup (115g) unsalted butter

½ cup (120ml) sweetened condensed milk

2 tablespoons unsweetened cocoa powder

1 teaspoon vanilla extract

¼ teaspoon salt

Optional Add-Ins

½ cup chopped walnuts

½ cup roasted almonds

½ cup hazelnuts

½ cup mini marshmallows

¼ cup raisins

¼ cup dried cranberries

Chocolate Ganache

150g dark chocolate

½ cup (120ml) heavy cream

1 tablespoon butter

Garnish

Chocolate shavings

Cocoa powder

Crushed pistachios

Fresh strawberries

Gold sprinkles (optional)

Kitchen Equipment

Air fryer

7-inch round cake pan

Mixing bowls

Saucepan or microwave-safe bowl

Rubber spatula

Parchment paper

Cooling rack

Instructions

Step 1: Prepare the Cake Pan

Grease a 7-inch round cake pan with butter.

Line the bottom with parchment paper.

Set aside.

Step 2: Crush the Biscuits

Break the biscuits into medium-sized chunks.

Avoid crushing them into fine crumbs—you want visible biscuit pieces throughout the cake.

Place them in a large mixing bowl.

Step 3: Make the Chocolate Mixture

In a saucepan over low heat, combine:

Dark chocolate

Milk chocolate

Butter

Condensed milk

Stir continuously until completely melted and smooth.

Remove from the heat.

Add:

Cocoa powder

Vanilla extract

Salt

Mix until glossy.

Step 4: Combine Everything

Pour the warm chocolate mixture over the broken biscuits.

Add any optional nuts, marshmallows, or dried fruit.

Fold gently until every biscuit piece is evenly coated.

Do not overmix, as you want to keep the biscuit chunks intact.

Step 5: Fill the Cake Pan

Transfer the mixture into the prepared cake pan.

Press it down firmly with the back of a spoon or spatula to remove air pockets.

Smooth the top evenly.

Step 6: Preheat the Air Fryer

Preheat the air fryer to 320°F (160°C) for 3–5 minutes.

Step 7: Air Fry the Cake

Place the cake pan into the air fryer basket.

Bake at 320°F (160°C) for 20–25 minutes.

The cake should feel firm around the edges while remaining slightly soft in the center.

Avoid overbaking, as the cake will continue to set as it cools.

Step 8: Cool Completely

Remove the cake from the air fryer.

Allow it to cool in the pan for 20 minutes.

Transfer to a wire rack.

Refrigerate for at least 1 hour to fully set before decorating.

Step 9: Prepare the Ganache

Heat the heavy cream until just simmering.

Pour it over the chopped dark chocolate.

Let it sit for 2 minutes.

Add the butter and stir until smooth and shiny.

Allow the ganache to cool slightly.

Step 10: Decorate

Pour the ganache over the chilled cake.

Spread evenly with an offset spatula.

Decorate with:

Chocolate shavings

Crushed pistachios

Fresh strawberries

Cocoa powder

Gold sprinkles

Slice and serve.

Serving Suggestions

This Chocolate Biscuit Cake pairs wonderfully with:

Vanilla ice cream

Fresh whipped cream

Chocolate ice cream

Fresh strawberries

Raspberries

Blueberries

Caramel sauce

Chocolate sauce

Serve alongside:

Coffee

Espresso

Cappuccino

Hot chocolate

English breakfast tea

Chai latte

Tips for the Perfect Chocolate Biscuit Cake

Use good-quality chocolate for the richest flavor.

Leave the biscuit pieces fairly large for the best texture.

Press the mixture firmly into the pan to prevent crumbling.

Chill thoroughly before slicing.

Use a hot knife for clean slices.

Don’t overbake—the cake should remain fudgy.

Recipe Variations

Oreo Chocolate Biscuit Cake

Replace half the tea biscuits with crushed Oreo cookies for a cookies-and-cream twist.

Nut Lover’s Cake

Add chopped almonds, hazelnuts, walnuts, and pistachios for extra crunch.

Triple Chocolate Cake

Mix dark, milk, and white chocolate chunks into the biscuit mixture.

Salted Caramel Biscuit Cake

Drizzle salted caramel sauce between the biscuit layers before baking and on top after adding the ganache.

Peanut Butter Chocolate Cake

Swirl ¼ cup creamy peanut butter into the chocolate mixture before combining with the biscuits.

Storage

Store the cake in an airtight container in the refrigerator for up to 5 days.

Freezing

Wrap individual slices tightly in plastic wrap and foil.

Freeze for up to 2 months.

Thaw overnight in the refrigerator before serving.

Reheating

This cake is best enjoyed chilled or at room temperature and does not require reheating.

If desired, let it sit at room temperature for 15–20 minutes before serving for a softer texture.

Frequently Asked Questions

Can I use digestive biscuits instead of tea biscuits?

Yes. Digestive biscuits work wonderfully and add a slightly buttery flavor. Graham crackers or Marie biscuits are also good alternatives.

Can I make this without condensed milk?

Yes. You can substitute it with heavy cream and an extra tablespoon of sugar, though the texture may be slightly less rich.

Why did my cake crumble?

The mixture may not have been pressed firmly enough into the pan, or it wasn’t chilled long enough before slicing.

Can I make it ahead of time?

Absolutely. This cake actually tastes even better the next day after the flavors have had time to develop.

Can I make it gluten-free?

Yes. Simply use your favorite gluten-free biscuits and check that all other ingredients are certified gluten-free.

Nutritional Benefits

While this is an indulgent dessert, making it at home allows you to control the quality of the chocolate and other ingredients. Adding nuts increases the protein, healthy fats, and fiber content, while dark chocolate provides antioxidants and minerals such as iron and magnesium.

Final Thoughts

This Air Fryer Chocolate Biscuit Cake is a rich, fudgy, and irresistible dessert that’s incredibly easy to make. With crunchy biscuit pieces, silky melted chocolate, and a luscious ganache topping, every slice is packed with flavor and texture. Perfect for celebrations, holidays, afternoon tea, or satisfying a chocolate craving, this cake is sure to become a favorite in your dessert collection.

Make it your own with nuts, marshmallows, caramel, or fruit, and enjoy a bakery-style chocolate treat made effortlessly in your air fryer.