INGREDIENTS
Nonstick cooking spray, for pan
1/2 cup
unsalted butter, chilled
3/4 cup
sugar
1 1/2 cups
all-purpose flour
1/2 tsp
ground cinnamon
kosher salt
1
egg
1/2
heaping cup sour cream
1/3 cup
sugar
2 tbsp
lemon juice
1 tbsp
all-purpose flour
4 tsp
cornstarch
2 tsp
vanilla extract
1/2 tsp
ground cinnamon
2 cups
blueberries