INGREDIENTS
1 cup
Blueberries, fresh
2
Lemons, zest of large
1
Egg, large
2 tbsp
Lemon juice, freshly squeezed
2 cups
All-purpose flour
1 tsp
Baking powder
1/4 tsp
Baking soda
1 cup
Confectioners' sugar
1/2 tsp
Salt
1/3 cup
Sugar
1/2 tsp
Vanilla extract
1/2 cup
Butter, unsalted frozen
3 tbsp
Butter, unsalted
1/2 cup
Sour cream