INGREDIENTS
1 cup
all-purpose flour
1 cup
whole wheat flour
2 tsp
baking powder
1/2 tsp
baking soda
1/2 tsp
coarse salt
1/2 cup
unsalted butter, cold and cut into cubes
3/4 cup
buttermilk, cold
1 cup
cheddar cheese, grated
1
large egg + 1 tablespoon water, for egg wash