Ingredients
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5 x 440g packets golden buttercake cake mix (see Notes)
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18 natural ice-cream wafers
Caramel fudge ganache
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3 x 180g blocks white chocolate, chopped
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200g packet jersey caramels, chopped
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3/4 cup pure cream
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Brown gel food colouring
Milk chocolate ganache
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750g milk chocolate, chopped
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1 cup pure cream
Peanut crackle
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170g milk chocolate, chopped
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3/4 cup puffed rice
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3/4 cup unsalted roasted peanuts
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2 x 46g Picnic bars, chopped
Buttercream
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250g butter, softened
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1 teaspoon vanilla bean paste
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3 cups icing sugar mixture
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1 tablespoon milk
Equipment
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20cm x 50 cm rectangular cake board or serving platter, three 20cm x 30cm lamington pans, electric mixer
Method
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1Preheat oven to 180C/160C fan-forced. Grease three 20cm x 30cm lamington pans. Line bases and 2 long sides of each pan with baking paper, extending paper 2cm above edges of pan.
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2Prepare cakes in batches following packet directions. Pour batter evenly among prepared pans. Bake cakes for 45 minutes or until a skewer inserted into the centre of cakes comes out clean. Stand in pans for 5 minutes. Turn, top-side up, onto a wire rack lined with baking paper. Cool completely.
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3Make Caramel Fudge Ganache: Place chocolate, caramels and cream in a medium saucepan over low heat. Cook, stirring, for 10 minutes or until mixture is smooth and just comes to the boil. Remove from heat. Using food colouring, tint ganache a caramel colour. Set aside for 2 1/2 hours or until ganache has cooled and is thick enough to spread.
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4Meanwhile, make Milk Chocolate Ganache: Place chocolate in a large heatproof bowl. Place cream in a small saucepan over medium heat. Bring to a simmer (do not boil). Pour hot cream over chocolate in bowl. Stir until chocolate has melted and mixture is combined. Set aside for 2 hours or until ganache is cool and a thick, pourable consistency.
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5Make Peanut Crackle: Place chocolate in a microwave-safe bowl. Microwave on HIGH (100%), stirring with a metal spoon every 30 seconds, for 1 to 2 minutes or until smooth. Stand for 2 minutes. Combine puffed rice and roasted peanuts in a medium bowl. Add melted chocolate. Stir until well combined. Stir in Picnic bars. Spoon mixture onto a baking tray lined with baking paper. Set aside for 30 minutes or until firm. Break peanut crackle into small pieces no bigger than 2.5cm.
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6Make Buttercream: Using an electric mixer, beat butter and vanilla for 8 to 10 minutes or until light and fluffy. Gradually add icing sugar, beating until well combined. Add milk. Beat until combined.
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7Trim tops of each cake to level. Trim sides of cakes to remove crusts. Cut 2cm off 1 long side of each cake. Discard trimmings. Place 1 cake on centre of cake board or serving plate. Spread top with 1/4 cup buttercream. Arrange 1/2 the wafers in a single layer over buttercream, pressing gently to secure. Spread 2/3 cup remaining buttercream evenly over wafers. Top with 1 cake, pressing gently to secure. Spread with 1/4 cup remaining buttercream. Top with remaining wafers. Spread remaining buttercream evenly over wafers. Top with remaining cake.
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8Spoon caramel ganache onto cake. Spread evenly over top and sides of cake. Place peanut crackle pieces over top and sides of cake, pressing lightly to secure. Refrigerate cake for 20 minutes or until caramel is firm. (Caramel may slide down the sides of cake as it cools. Use a spatula to spread it back onto the sides of cake.)
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9Pour chocolate ganache over top of cake, allowing it to fall down the sides to cover. Use a spatula to spread ganache over any uncovered parts of the cake. Refrigerate for 30 minutes or until set.
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10Using a spatula, scrape excess ganache from board and wipe with damp paper towel. Refrigerate. Serve (see Notes).
Source: taste.com.au
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