INGREDIENTS
1 cup
Blueberries, frozen
3/4 tsp
Lemon, zest
1
Egg, large
2 tsp
Baking powder
1/4 tsp
Baking soda
1/2 cup
Brown sugar, light
1 tsp
Cinnamon
2 cups
Flour
1/2 tsp
Salt
3/4 cup
Sugar
1 tsp
Vanilla extract, pure
3 tbsp
Butter, unsalted
1 cup
Sour cream