Oven method: Turn on the oven to 350 degrees, then place the ziti in a casserole dish. Add some aluminum foil and bake for 15-20 minutes or until the cheese is melted and it’s hot. Microwave method: Place on a microwavable plate and cover with a moist paper towel. Heat for 1-2 minutes or until hot. The damp paper towel keeps the pasta from drying out as it heats.