Banana Cake

Name: Banana Cake
Ingredients: 0.75 (1 1/2 sticks) butter, softened; 0.5 c. granulated sugar; 0.5 c. packed brown sugar; 3 eggs; 3 ripe bananas, mashed; 0.75 c. sour cream; 1 tsp. pure vanilla extract; 3 c. all-purpose flour; 1 tbsp. cornstarch; 1 tsp. baking soda; 0.5 tsp. ground cinnamon; 0.5 tsp. kosher salt