12 slices bacon, crisply fried and crumbled
1 cup shredded natural Swiss cheese
1/3 cup chopped onion
2 cups milk
1 cup Bisquick baking mix
4 eggs
1/4 tsp salt
1/8 tsp pepper

Heat oven to 400. Grease 10-inch quiche dish or pie plate, 10 x 1-1/2 inches. Sprinkle bacon, cheese and onion in plate. Beat remaining ingredients until smooth, 15 seconds in blender on high or 1 min. with hand beater. Pour into plate. Bake until knife inserted between center and edge comes out clean, 35 to 40 min. Cool 5 minutes.

Hope this is it, I've had this recipe hanging around for ages. Use to love making this!