This is actually not bad considering that my brother has trouble making a bowl of cereal for breakfast!
8 oz box elbow macaroni
1 cup mayo
1 can cream of mushroom soup
4 cups sharp cheddar cheese (shredded)
Preheat oven to 350 degrees. Cook macaroni as directed then drain. Combine macaroni with mayo, soup and cheese. Place in well greased 9x13 baking dish. Bake uncovered about 30 minutes or 'til bubbly throughout. (May cut back on cheese if this is too cheesy for your taste).