Medium size Crockpot - easy! Spray crockpot. Turn on High. Melt 1/2 stick butter in it. Add 1 qt. milk. Add 2 cups dry macaroni. Add 8 -10 ounces cheese. Stir well. Turn to Low. I let mine cook an hour or so and stir. Mine is usually done in about an hour and 15 minutes, depending on crockpot. There's just the 2 of us, so I freeze a couple of qt. baggies of it.