INGREDIENTS
cooking spray
--
Cake Batter:
1 cup
all-purpose flour
1/2 cup
cornmeal
2 tsp
baking powder
1/2 tsp
salt
1 stick
unsalted butter, room temperature
1 cup
sugar
2
eggs
1/4 tsp
vanilla extract
1/4 tsp
lemon zest
1/3 cup
sour cream or plain Greek yogurt
2 cups
blueberries, rinsed and patted dry
--
Streusel Topping:
1/2 cup
sugar
6 tbsp
flour
2 tbsp
cornmeal
1/4 tsp
ground cinnamon
salt
3 tbsp
unsalted butter, COLD and cut into small pieces