Ingredients
250g packet Marie biscuits
150g unsalted butter, melted
24 (150g) white marshmallows
Chocolate Filling
200g block dark chocolate, chopped
150g unsalted butter, chopped
2/3 cup caster sugar
2 eggs, lightly beaten
1⁄2 cup plain flour
2 tblsps cocoa powder
Method
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Grease an 18cm x 28cm rectangular slice pan. Line base and sides with baking paper, extending paper 4cm above pan edges.
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Process biscuits in a food processor until finely crushed. Add butter and process until combined. Press over base of prepared pan. Refrigerate while making filling.
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To make filling, combine chocolate and butter in a heatproof bowl. Sit bowl over a saucepan of simmering water. Stir until melted and smooth. Remove bowl from heat. Stand 10 minutes to cool.
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Stir sugar into chocolate mixture. Add eggs, sifted flour and cocoa. Stir until combined. Pour over base.
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Cook in a moderately slow oven (160C) for 25 minutes. Remove from oven. Carefully arrange marshmallows, about 1cm apart, over the top in a single layer. Return to oven.
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Cook for a further 25 to 30 minutes, or until marshmallows are lightly golden and outer edge of slice is firm to touch. Remove. Cool completely in pan.
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Lift slice out of pan. Cut into squares.
