For The Brownies:
100g butter, softened
125g peanut butter
75g caster sugar
50g dark brown soft sugar
1 egg
1 teaspoon vanilla extract
125g plain flour
1/2 teaspoon bicarbonate of soda
1 pinch salt
75g dark chocolate, chopped
For The Peanut Butter Layer:
100ml whipping cream
175g peanut butter
75g icing sugar
50g butter
125ml milk
1 teaspoon vanilla extract
1. Preheat the oven to 170 C / Gas mark 3. Grease a 23cm (9 in) baking tin.
2. For the brownies: In a medium bowl, blend together the butter, peanut butter, caster sugar, brown sugar, egg and 1 teaspoon of vanilla until smooth. Combine the flour, bicarbonate of soda and salt; stir into the sugar mixture. Spread evenly into the prepared tin.
3. Bake for 20 minutes in the preheated oven, until firm. Remove from the oven and sprinkle with chocolate. Let stand for a minute, then spread the chocolate to form a layer.
4. To make the peanut butter layer, whip the cream until stiff. Then blend together the remaining peanut butter, icing sugar and butter. Gradually stir in the milk and 1 teaspoon vanilla. Gently mix in the whipped cream. Chill. When brownies and topping are both cooled, spread topping onto brownies and cut into squares.
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