INGREDIENTS
1 cup
Blueberries, fresh
1/2 tsp
Lemon, zest
2
Eggs, large
1 tsp
Baking powder
1/4 tsp
Baking soda
1/3 cup
Brown sugar, light lightly packed
1 tsp
Cinnamon, ground
1
Confectioners' sugar
2 1/2 cups
Flour
1 cup
Granulated sugar
1/2 tsp
Kosher salt
1/8 tsp
Nutmeg, ground
1 tsp
Vanilla extract, pure
1/4 lb
Butter, unsalted
6 tbsp
Butter, unsalted
2/3 cup
Sour cream