3/4 lb. ground beef
1/2 c. finely chopped onion
1 (15 oz.) can tomato sauce
1/2 tsp. oregano
1/2 tsp. basil
Salt and freshly ground pepper
4 med. zucchini, about 8 inches long
1 (8 oz.) container ricotta cheese or large curd cottage cheese
1 egg
1/2 lb. Mozzarella cheese
Grated Parmesan cheese

Preheat oven to 350 degrees. Cook beef and onion in large skillet; drain fat. Add tomato sauce and seasonings; simmer uncovered 10 minutes, stirring occasionally. Slice zucchini lengthwise about 1/4 inch thick. Arrange half the slices in 8 x 12 inch shallow baking pan; salt lightly. Beat ricotta with egg; spread on zucchini. Top with 1/2 Mozzarella and half of meat sauce. Layer with remaining zucchini, Mozzarella, and sauce. Sprinkle generously with Parmesan and bake uncovered 40 minutes. Let stand 10 minutes before serving.