INGREDIENTS
Crumb Topping:
1/3 cup
granulated sugar
1/3 cup
brown sugar
3/4 tsp
cinnamon
1/8 tsp
salt
1/2 cup
butter (1 stick), melted
1 3/4 cups
cake flour
Cake:
1 1/4 cups
cake flour
1/2 cup
granulated sugar
1/4 tsp
baking soda
1/4 tsp
salt
6 tbsp
butter, cut into pieces, softened but cool
1
egg
1
egg yolk
1 tsp
vanilla
1/3 cup
buttermilk
Powdered Sugar for dusting