Preheat the oven to 375 °F . Lightly spritz a 9x13-inch baking dish with nonstick spray.
Whisk together the applesauce, sugar and cocoa powder
Use the whisk to beat in the egg and egg whites.
Whisk in the vanilla extract, baking powder and salt
Stir in the milk
Stir in the oats
Stir in the chocolate chips and raspberries.
Bake at for about 45 minutes at 375 °F. If you're using frozen raspberries, you may need to bake the oatmeal for up to 1 hour. Keep an eye on it! Oatmeal is done when the edges are golden-brown and a knife or toothpick inserted into the center comes out clean.