*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
**Nutrient information is not available for all ingredients. Amount is based on available nutrient data.
(-)Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.
Preheat oven to 350 degrees F (175 degrees C). Grease an 8-inch square baking pan.
Mix oats, brown sugar, whole wheat flour, cocoa powder, all-purpose flour, and baking powder together in a large bowl; mash in banana. Stir in eggs, butter, milk, applesauce, and vanilla extract; mix thoroughly until batter is smooth. Pour into the baking pan. Sprinkle chocolate chips on top.
Bake in the preheated oven until a toothpick inserted into the center comes out clean, 40 to 45 minutes.