New York Style Crumb Cake

CRUMB TOPPING

1/3 cup sugar

1/3 cup dark brown sugar

3/4 tsp cinnamon

8 tbs butter

1-3/4 cup cake flour

CAKE
1 egg
1 egg yolk
1 tsp vanilla
1/2 cup sugar
1/3 cup buttermilk
1/4 tsp baking soda
1-1/4 cup cake flour
6 tbs butter

1. For the topping: Whisk sugar, brown sugar, cinnamon, and melted butter in bowl. Stir in flour until dough-like. Set aside.

2. For the cake: Whisk flour, granulated sugar, and baking soda, in large bowl. Beat butter into the flour mixture using an electric mixer. Beat in egg, egg yolk, vanilla, and buttermilk until combined. Beat the batter until smooth.

3. Place batter in 8-inch sq cake pan. Break apart crumb mixture into pea sized pieces and layer on top of batter.

4. Bake 35-40 mins at 325 F.

5. Let cool for 30 mins and sprinkle with confectioners' sugar.