Start cooking the noodles

Cut spam into cubes

Cook spam in a little butter (if desired) until slightly brown

When noodles are done, add then to the spam (burner off)

Add Alfredo sauce and green beans; mix

Put spam mixture in pan

Cover top with fried onions and bake at 350° for 20 mins

Since all ingredients are already cooked you wait until it's too desired temperature. You can also leave the spam raw and mix with the Alfredo sauce and noodles. It will cook in the oven.