Mix well, store in an airtight container, either in your refrig. OR in a cool dark pantry. When you go to use it simply use a pastry brush and brush it into your pan like you would if you were greasing it and then flouring. (I use waxed paper to apply it)Then add your cake mix and bake. (I also use it in my muffin pans and that way I don't have to use the muffin papers)(Can also be used IF making Loaf breads or Quick breads)No need to flour your pan,'cause the flour is in the mix!