Ingredients
Chocolate ganache
Method
1.Preheat oven to 180°C/350°F. Grease 20cm x 30cm (8-inch x 12-inch) lamington pan; line with baking paper, extending paper 5cm (2 inches) over long sides.
2.Grate beetroot coarsely.
3.Beat butter and sugar in small bowl with electric mixer until light and fluffy. Beat in eggs, one at a time. Stir in sifted flours and cocoa, then chocolate and beetroot.
4.Spread mixture into pan; bake about 40 minutes. Stand cake 5 minutes; turn, top-side up, onto wire rack to cool.
5.Meanwhile, for the ganache, stir ingredients in small heatproof bowl over small saucepan of simmering water until smooth; cool. Refrigerate until spreadable.
6.Spread cake with ganache.