Chocolate Banana Streusel Cake

Name: Chocolate Banana Streusel Cake
Ingredients: ¼ cup quick-cooking oats; 1 tsp ground cinnamon; 3 large ripe bananas (1⅓ cups mashed); 1½ cups brown sugar; 1½ cups brown sugar; ⅓ cup canola oil; ⅓ cup canola oil; 2 eggs (or 1 egg plus 2 egg whites); 2 eggs (or 1 egg plus 2 egg whites); 2 eggs (or 1 egg plus 2 egg whites); 1 tsp pure vanilla extract; 1¾ cups flour; 1¾ cups flour; ¼ cup unsweetened cocoa powder; ¼ cup unsweetened cocoa powder; 1 tsp baking soda; 1 tsp baking powder; ½ cup orange juice; ½ to ¾ cup chocolate chips