1/2 C. butter 2 C. original Bisquick mix 2 C. milk 8 eggs 1 C. shredded Swiss cheese 1 lb. cubed cooked ham 4 slices bacon, cooked and crumbled 2 C. shredded Cheddar cheese 1/4 tsp. ground mustard
Heat oven to 375F. Spray 13x9" glass baking dish with cooking spray. Place butter in dish; place in oven until melted, about 10 minutes. In a medium bowl, mix Bisquick mix, 1 cup milk and 2 of the eggs with whisk until tiny lumps remain. Pour over butter in baking dish. Layer with Swiss cheese, ham, bacon and Cheddar cheese. In a large bowl, mix remaining 1 cup milk, remaining 6 eggs and ground mustard. Pour over the casserole. Bake, uncovered, 35 to 40 minutes or until golden brown. let stand 10 minutes before serving.