OMG This Homemade Rainbow Mac and Cheese Recipe Will Change Your Life

— box of elbow macaroni

— 5 Tablespoons of butter

— 3 cups of milk

— 1 Tablespoon of salt

— 2 cups of cheddar cheese

— 1 cup Monterey jack cheese

— 1/2 cup Parmesan cheese

— 1/4 cup of flour

— food coloring