Oil 9 X 13 inch baking dish or spray.
Combine sausage, bacon, hash browns, pepper, onions, and 1 cup of cheese in a large bowl.
Spread in a baking pan.
Whisk together Bisquick, milk, salt, and eggs until blended.
Pour over potato mixture.
Sprinkle over remaining cheese.
Cover and refrigerate overnight.
Next day, bake 30 minutes at 375 until golden brown