Heat oven to 160 degC fan bake. Grease 12 individual cupcake or muffin tins.
Place butter and sugars in a bowl and beat with an electric mixer until pale and creamy. Beat in the eggs, one at a time. Then beat in the vanilla and jam, followed by the milk.
Sift the flour, cocoa and baking soda over the creamed mixture and stir to combine. Stir in 1 cup of the raspberries.
Spoon mixture into prepared tins. Bake for 30 minutes or until a skewer inserted in the centre of one comes out clean. Turn out onto a wire rack to cool. Serve topped with extra berries and dusted with cocoa powder.
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