Swiss Onion Bake - cooking recipe

Ingredients

2 tsp. butter
2 c. sliced onion
6 hard-boiled eggs, sliced
6 oz. Swiss cheese (1 1/2 c. shredded)
1 (10 1/2 oz.) can cream of chicken soup
1 1/4 c. milk
1/2 tsp. mustard
6 slices bread, cut 1/2-inch thick and buttered

Preparation

In skillet, melt butter; add onion and cook until tender. Spread in bottom of 10 x 6 x 1 1/2-inch baking dish.
Top with sliced eggs.
Sprinkle with cheese.
In saucepan, combine soup, milk and mustard.
Heat and stir until smooth.
Pour over casserole, being sure some goes to bottom of pan.
Place bread slices on top, overlapping a little.
Bake 35 minutes at 350\u00b0.