Arrange sausages on ungreased baking sheet. Bake at 375 F for 15-20 min, turning once or until sausage is cooked through and lightly browned; drain. Allow to cool slightly. Slice sausage into 1/4 in.coins.
In a large bowl, whisk eggs, milk, and seasonings. Add sausage, hash browns, cheese, bell pepper and onions. Pour into a greased 13-in. x 9-in. x 2-in. baking dish. Cover and refrigerate overnight.
Remove from refrigerator 30 min. before baking. Bake, uncovered at 350 F for 65-70 min. or until a knife inserted in the center comes out clean. Let stand 10 minutes before serving. Serve with salsa or picante sauce, if desired.