Asparagus Casserole

2 tablespoons butter
2 tablespoons flour
2 tablespoons asparagus juice
1 cup whipping cream or half-and-half
1/2 cup grated cheese (Colby or Cheddar)
1 small can mushrooms
2 cans asparagus
Ritz cracker crumbs
Salt and pepper to taste

Mix butter in saucepan and gradually add flour, stirring constantly. Add asparagus juice making a paste. Add cream, stirring constantly until thick. Add salt, pepper and cheese. Stir until dissolved. Add mushrooms. Line bottom of casserole with one can of asparagus. Cover with sauce. Add second can of asparagus and cracker crumbs. Bake for 20 minutes at 350 degrees F.