Cake
½ cup (125 mL) butter
1¼ cup (275 mL) sugar
2 cups (500 mL) flour
3 tsp (15 mL) baking powder
1 tsp (5 mL) salt
1 cup (225 mL) milk
3 egg whites
3 squares semi-sweet chocolate, grated
2 tsp (10 mL) vanilla
Icing
3 egg yolks
2 cups (500 mL) icing sugar
½ cup (125 mL) butter
2 tsp (10 mL) vanilla
3 squares semi-sweet chocolate
Beat butter and 1 cup (225 mL) sugar until light and fluffy. In a separate bowl, mix flour, baking powder and salt together; add to butter mixture and mix well. Add milk gradually.
In another bowl, beat egg whites with remaining ¼ cup (50 mL) sugar, and fold gently into mixture; add grated chocolate, and vanilla.
Grease two 9x9-inch (23x23-cm) round cake pans and line with parchment paper. Pour cake batter evenly between the pans and bake at 350ºF (180ºC) for 25-30 minutes. Let cake cool.
To make icing: mix yolks, sugar, butter and vanilla until fluffy. Spread icing on one cake layer; place second layer on top, and spread icing over top and sides.
Melt chocolate and drizzle over icing. Use the tines of a fork to make squiggly lines, giving the impression of ski marks in snow.