No-Bake Chocolate Tea-Biscuit Slice (Mosaic Cream Cake)
✨ Why This Recipe Works
A decadent no-bake dessert featuring a rich dark chocolate biscuit base, a thick layer of whipped vanilla cream, and a crisp tea-biscuit crown.
Crafted with everyday pantry staples and perfected in Mery's home kitchen, this No-Bake Chocolate Tea-Biscuit Slice (Mosaic Cream Cake) brings authentic comfort and vibrant flavors straight to your table. Every step has been carefully timed and measured so home cooks of any skill level can recreate foolproof, delicious results with ease.
📜 Deep-Dive Food History • 🌲 Wild Foraging & ASMR Cooking • 🍲 Ancient Recipes Brought to Life
🥗 Ingredients (tap to check off)
For the Rich Chocolate Biscuit Base
- 400 g (14 oz) dark chocolate (54%–70%), broken into pieces
- 80 g (⅓ cup packed) light brown sugar
- 150 g (about 1½ cups) round tea biscuits or butter cookies, roughly crushed into pea-sized pieces
- About 200 g whole square tea biscuits (Petit Beurre style), for the bottom lining
For the Fluffy Whipped Cream Layer
- 400 ml (1⅔ cups) heavy whipping cream, very cold
- 2 tbsp powdered sugar, sifted
- 1 tsp pure vanilla extract
For the Crisp Biscuit Topping
- 6–9 whole square tea biscuits (enough to cover the top cream in a neat 3x3 grid)
👨🍳 Step-by-Step Instructions
Line Pan & Base
Line a 9-inch square baking pan with parchment paper, leaving generous overhang on two sides for easy lifting. Arrange a single snug layer of whole square tea biscuits across the bottom of the pan.
Melt Chocolate & Whisk Sugar
Melt the dark chocolate in a large heatproof bowl set over a pot of barely simmering water (or in the microwave in 30-second bursts, stirring between each). Add the light brown sugar to the warm melted chocolate and whisk until dissolved and smooth.
Fold Biscuit Pieces
Gently fold the roughly crushed round tea biscuit pieces into the melted chocolate mixture with a spatula until every biscuit crumble is completely coated.
Layer & Pre-Chill
Pour the chocolate-biscuit mixture over the biscuit base in the pan. Spread evenly edge-to-edge with the back of a spoon. Chill in the refrigerator for 20–30 minutes until the surface is just set and no longer warm.
Whip the Vanilla Cream
In a chilled mixing bowl, whip the cold heavy cream, powdered sugar, and vanilla extract on high speed until stiff, stable peaks form.
Spread Cream & Top with Biscuits
Dollop the whipped cream generously over the chilled chocolate layer and spread smooth with an offset spatula. Arrange whole square tea biscuits on top in a neat grid to guide your slices.
Chill Firm & Slice
Refrigerate for at least 4 hours (or overnight) until thoroughly set. Lift the dessert slab out using the parchment overhang and slice into 9 generous squares with a warm, dry chef's knife. Serve chilled.
🍪 Storing & Freezing Cookies
Room Temperature: Store cooled cookies in an airtight container for up to 5 days. Place a sheet of parchment paper between layers to preserve delicate crunch.
Freezing: Baked cookies freeze wonderfully for up to 2 months in an airtight container. Thaw at room temperature for 15 minutes before serving.
🍳 Recommended Kitchen Equipment
Kitchen Note: Having the right kitchen tools ensures foolproof results. We recommend items tested in our own home kitchen.
📊 Nutritional Breakdown (Per Serving)
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