Preheat the oven to 180°/350°F/gas 4. Line a 24cm x 20cm or 10 inch x 8 inch brownie tin with baking parchment or greaseproof paper.
Put the butter, dark chocolate and Orange Spice Drops® in a non-stick saucepan and very gently melt over a low heat, stirring every now and then, until smooth – take care not to overheat it. Leave to cool down.
Whisk the eggs and sugar together with an electric whisk until the mixture is pale, frothy and leaves a trail when the beaters are lifted.
Gently stir in the cooled chocolate mixture and the orange juice and continue to whisk. Sift over the flour and cocoa and stir in.
Pour into the lined tin and bake for 30-35 minutes. Cool in the tin, then cut into squares.