Combine mushrooms, onion, crabmeat, whole wheat bread crumbs, parsley, and lemon juice. Spread a portion of the mixture over each flounder piece and roll up. Place rolls, seam side down, in a shallow baking dish coated with cooking spray. Cover each roll with approximately 1/2 slice of low fat cheese such as Lite Line or So Lo American. Bake at 350 degrees for 20 to 25 minutes or until fish flakes with a fork.

- Annapolis Seafood Markets