Cook elbow macaroni aldente. Spray casserole dish with cooking spray. Place pasta in casserole dish. Melt butter and pour over pasta. Set aside and cover to keep warm.
Finely chop crab meat. Mix crab with pasta. Top with Cheddar cheese. Heat in oven at 350 degrees for 20 minutes or until cheese is nicely melted
Source: Reprinted with permission from Bob & Joe's Smart Seafood Guide, A Practical Look at Seafood.