Cook sausage according to package directions. Cool slightly; cut into 1/4-in. slices.
In a large bowl,combine the sausage, potatoes, onion, green pepper and 1-3/4 cups cheese.
Spoon into a greased 13-in. x 9-in. baking dish.
Combine the eggs, milk, mustard, salt and pepper. Pour over sausage mixture.
Sprinkle with remaining cheese.
Bake, uncovered, at 350 degress F for 45-50 minutes or until a knife inserted into the center comes out clean.
Let stand 5 minutes.
From The Kitchen at Johnsonville® Sausage