Heat oven to 400 degrees. Lightly spray pie plate with vegetable oil. Heat 1 cup water with 1/2 teaspoon salt to boiling. Add broccoli, cook until tender, drain thoroughly. Mix broccoli, onion, green pepper and cheese in pie plate. Beat remaining ingredients until smooth, 15 seconds in blender. Pour into pie plate. Bake until golden brown and knife inserted halfway between center and edge comes out clean, 35 to 40 minutes. Let stand 5 minutes before cutting.

*1 package (10 ounce) frozen chopped broccoli or cauliflower, thawed and drained can be substituted for fresh broccoli.(Do not cook.)