Chocolate and biscuit cake, known in Spain as Tarta de la Abuela (Grandma’s Cake), is one of the most beloved desserts. Easy to make, rich in flavor, and deeply nostalgic, this cake has been a staple at birthdays and family gatherings for generations.

This is a full guide to explore everything you need about this classic Spanish dessert, including a step-by-step recipe, expert tips, variations, and related Spanish sweets. Let’s dive in!

What is Spanish Chocolate and Biscuit Cake?

Spanish chocolate and biscuit cake is a no-bake layered dessert made with biscuits soaked in milk or coffee, creamy custard, and rich chocolate ganache. It’s a simple yet incredibly satisfying treat in Spain, especially at children’s parties and special occasions.

A Bit of History

This cake became popular in Spain during the 20th century when store-bought biscuits like María became widely available. The recipe evolved, incorporating custard and chocolate layers, making it a staple in Spanish households.

Why is It So Popular?

• Easy to prepare – No baking required, making it perfect for beginners.
• Minimal ingredients – Uses basic pantry staples.
• Versatile – Can be adapted with different flavors like coffee, liqueurs, or white chocolate.
• Perfect for crowds – A single cake serves many, making it ideal for birthdays and gatherings.

Ingredients for the Perfect Spanish Chocolate and Biscuit Cake

To achieve the best flavor and texture, you’ll need the following:

Essential Ingredients:

✔ 2 packs of María biscuits (or Graham crackers as a substitute)
✔ 1 liter (4 cups) whole milk
✔ 3 tablespoons cornstarch
✔ 4 egg yolks
✔ 100g (½ cup) sugar
✔ 200g (7 oz) dark chocolate
✔ 200ml (¾ cup) heavy cream
✔ 50g (3 tbsp) unsalted butter
✔ 2 teaspoons vanilla extract

Optional Additions for Extra Flavor:

• A shot of coffee or rum to soak the biscuits for a richer taste.
• White chocolate instead of dark for a sweeter version.
• Chopped nuts or grated coconut for added texture.

Step-by-Step Recipe – How to Make It at Home

1. Prepare the Custard

Heat the milk in a saucepan, reserving 1 cup for later.
Mix sugar, cornstarch, egg yolks, and vanilla with the reserved milk in a separate bowl.
Slowly add this mixture to the warm milk, stirring constantly until it thickens.

2. Make the Chocolate Cream

Melt the chocolate with the heavy cream over low heat.
Add butter for extra smoothness and let it cool slightly.

3. Assemble the Layers

Dip each biscuit in warm milk (or coffee for a stronger taste).
Create alternating layers of biscuits, custard, and chocolate cream.
Repeat until all ingredients are used, finishing with a chocolate layer on top.

4. Chill and Serve

Refrigerate for at least 4 hours (overnight is best).
Garnish with grated chocolate, cocoa powder, or nuts before serving.

Expert Tips for the Best Chocolate and Biscuit Cake

For a smoother custard – Stir constantly while heating to avoid lumps.
For a firmer cake – Refrigerate overnight so the layers set properly.
For a better flavor – Use high-quality dark chocolate (at least 70% cocoa).
For a softer texture – Don’t soak the biscuits for too long; a quick dip is enough.

Variations – Different Ways to Make It

Classic Version – Just biscuits, custard, and dark chocolate ganache.
Coffee-Infused Version – Soak biscuits in espresso for an adult twist.
White Chocolate Version – Swap dark chocolate for white for a creamier taste.
Nutty Version – Add crushed almonds or hazelnuts between layers.

Frequently Asked Questions (FAQ)

1. Can I make it without custard?

Yes! Some versions use whipped cream or just chocolate ganache instead of custard.

2. What’s the best chocolate to use?

Dark chocolate (70% cocoa) gives the best balance of richness and sweetness.

3. How long does it last in the fridge?

Up to 4-5 days if stored in an airtight container.

4. Can I freeze it?

Yes! Wrap it well and freeze for up to 3 months. Thaw in the fridge before serving.

Related Spanish Desserts You Must Try

Tarta de Santiago – A traditional almond cake from Galicia.
Flan de Huevo – A silky caramel custard.
Churros with Chocolate – Crispy fried dough served with hot chocolate.

Conclusion – Why This Cake is a Must-Try

Spanish chocolate and biscuit cake is more than just a dessert; it’s a childhood memory, a celebration staple, and a comforting treat. With its simple ingredients and easy preparation, anyone can recreate this Spanish classic at home.

Try it for your next gathering and enjoy the delicious nostalgia of Tarta de la Abuela!