10 White Castle hamburgers 4 Pkg. chopped frozen broccoli 1 Med. box Velveeta (R) cheese 1 Stack Ritz (R) crackers 1/2 Stick butter 1>. Place 10 White Castle hamburgers side by side in a large casserole dish. Cook 4 packages of frozen broccoli, drain and layer over White Castles. Melt cheese and pour over broccoli and White Castles. Crush 1 stack of crackers with 1/2 stick of butter; sprinkle over top of casserole. Bake at 350 deg F. for 30 minutes or until topping starts to brown.