Saute onions in butter until limp; blend in flour, salt, mustard, and pepper. Add milk; stir until mixture thickens. Blend in 1/3 cup of cheese and fold in green beans. Pour into 1 1/2 quart casserole. Combine remaining ingredients; sprinkle over top of casserole. Bake for 30 minutes at 350 degrees F.
By Robin from Washington, IA
Add your voice! Click below to comment. ThriftyFun is powered by your wisdom!