1Heat oven to 325°F. Lightly grease quiche dish, 9x1 1/2 inches.
2Mix mushrooms, onion, rice and water in 3-quart saucepan. Heat to boiling; reduce heat. Cover and simmer about 20 minutes, stirring occasionally, until rice is tender. Stir in broccoli and cottage cheese. Stir in remaining ingredients except 1/4 cup Cheddar cheese. Spoon into quiche dish.
3Bake uncovered 40 minutes. Sprinkle with 1/4 cup Cheddar cheese. Bake 10 to 15 minutes or until center is hot. Let stand 5 minutes before cutting.