INGREDIENTS
1/3 cup
granulated sugar
1/3 cup
dark brown sugar
3/4 tsp
ground cinnamon
1/8 tsp
salt
8 tbsp
unsalted butter, (melted)
1 3/4 cups
cake flour
1 1/4 cups
cake flour
1/2 cup
granulated sugar
1/4 tsp
baking soda
1/4 tsp
salt
6 tbsp
unsalted butter, (cut into 6 pieces, softened but still cool)
1
large egg
1
egg yolk
1 tsp
vanilla extract
1/3 cup
buttermilk (or 1/3 cup plain yogurt)