In a large skillet, cook bacon over medium heat until crisp. Remove to paper towel to drain. , In a large bowl, beat eggs. Add milk, cheese, sour cream, onions, salt and pepper. , Pour into a greased 13x9-in. baking dish. Crumble bacon and sprinkle on top. Bake, uncovered, at 325° until knife inserted in center comes out clean, 40-45 minutes. Let stand for 5 minutes.