INGREDIENTS
4 cups
Blueberries, fresh
1
Lemon, zest from
4
Eggs, large
2 tbsp
Lemon juice, freshly squeezed
1 1/2 cups
Oats, old fashioned
1 3/4 tsp
Baking powder
1 cup
Brown sugar, packed
1/4 tsp
Cinnamon
4 tsp
Cornstarch
3 1/2 cups
Flour
1 1/4 tsp
Kosher salt
2 1/4 cups
Powdered sugar
1/2 cup
Sugar
2 tsp
Vanilla extract, pure
2 cups
Land o lake unsalted butter