To make a topsy turvy apple coffee cake breakfasts recipe, first you need to prepare the ingredients. First, you'll need the following ingredients: 1 1/2 cups rolled oats 1 cup brown sugar 2 tablespoons butter 1 tablespoon vanilla 2 teaspoons cinnamon Instructions: Preheat the oven to 325 degrees F. Grease and flour two 8-inch round cake pans. Add the wet ingredients to the dry ingredients and stir until just combined. Pour the batter into the pan and bake for 35 to 40 minutes or until the toothpick inserted in the center comes out clean. Let the cake cool for 10 minutes before removing it from the baking pan.