2 (9 oz.) pkgs. frozen French style green beans
Milk
1/4 c. chopped onion
2 tbsp. butter
2 tbsp. all purpose flour
1/2 tsp. salt
1/4 c. grated Parmesan cheese
1 (5 oz.) can water chestnuts, drained and sliced
3/4 c. soft bread crumbs
2 tbsp. butter, melted

Cook beans according to package directions; drain, reserving liquid. Add milk to reserved liquid to make 1 1/4 cups; set aside. In saucepan, cook onion in 2 tablespoons butter until tender; blend in flour and salt. Stir in milk mixture all at once; cook and stir until thickened and bubbly. Stir in half the Parmesan cheese. Stir in the cooked beans and sliced water chestnuts; turn into a 1 quart casserole.

Toss crumbs with remaining Parmesan cheese and melted butter to combine; sprinkle atop casserole. Bake, uncovered, at 350 degrees until bubbly, about 30 minutes. Garnish with additional sliced water chestnuts, if desired. Makes 6 to 8 servings.