Zucchini-Sour Cream Casserole - cooking recipe

Ingredients

3 medium zucchini
1/4 c. sour cream
1 Tbsp. butter
1/2 c. + 3 Tbsp. sharp cheese, grated (divided)
1/2 tsp. salt
1 egg yolk, beaten
1/2 onion, finely chopped
3/4 c. bread crumbs, buttered

Preparation

Slice zucchini horizontally; simmer, covered, in small amount of water for 6 to 8 minutes.
Drain well.
Combine sour cream, butter, 3 tablespoonfuls cheese and salt.
Stir over hot water in double boiler until cheese melts.
Stir in egg yolk and onion.
Add all this to zucchini; turn into buttered 3-quart casserole. Sprinkle top with buttered bread crumbs and 1/2 cup cheese.
Bake at 350\u00b0 for 20 minutes.