Ritz Broccoli Bake

1 (10 oz) package frozen broccoli
1/4 pound Velveeta cheese, cubed
20 Ritz crackers, crushed
1/2 cup margarine

Soak broccoli in cold water to thaw while you prepare the other ingredients. Drain broccoli and layer in casserole in order listed. Bake at 350F for 30 minutes. Serves 6.