2 Tbs. plus 2 cups sugar
3/4 cup chopped walnuts
1 1/2 tsp. ground cinnamon
2 1/2 cups cake flour
2 tsp. baking powder
1/2 tsp. baking soda
1/2 tsp. salt
12 Tbs. (1 1/2 sticks) chilled unsalted butter,  cut into small pieces
3 eggs, lightly beaten
1 1/4 cups sour cream
1 1/2 tsp. vanilla extract
3 Tbs. nonfat milk
1 1/2 cups confectioners’ sugar
1 cup fresh raspberries