Heat oven to 350 degrees. Grease pie plate, 9x1 1/4 inches. Spread broccoli in plate. Beat sour cream, cottage cheese, baking mix, margarine and eggs until smooth, 15 seconds in blender on high or 1 minute with hand beater. Pour into plate. Top with tomatoes; sprinkle with Parmesan cheese. Bake until knife inserted between center and edge comes out clean, about 30 minutes. Cool 5 minutes. 6-8 servings.
High Altitude (3500 to 6500 feet): Use pie plate, 10 x 1 1/2 inches. Bake about 35 minutes.
