ZUCCHINI SWISS BAKE

3 cups sliced sweet onions, separated into rings
3 cups thinly sliced zucchini
1/4 cup margarine
2 eggs, beaten
1/4 cup milk
1/2 tsp. dry mustard
1/2 tsp. salt
1/8 tsp. ground black pepper
1 cup shredded Swiss cheese, divided use

Preheat oven to 375 degrees F.

Saute onion and zucchini in margarine until tender. Place in 8x8-inch casserole dish.

Combine remaining ingredients with 1/2 cup of the Swiss cheese. Pour over vegetables. Sprinkle the remaining 1/2 cup Swiss cheese over top.

Bake 375 degrees for 20 minutes or until firm.

Source: Magazine Clipping