Ingredients
1-3/4 cups water
2/3 cup milk
5 tablespoons butter or margarine, divided
1/2 teaspoon salt
2-2/3 cups mashed potato flakes
1 cup (8 ounces) sour cream
1 cup (4 ounces) shredded cheddar or Monterey Jack cheese
1 pound fully cooked smoked sausage links, halved lengthwise and cut into 1/2-inch slices
1 cup (4 ounces) shredded Monterey Jack or mozzarella cheese
2 tablespoons dry bread crumbs

Directions
In a large saucepan, bring water, milk, 4 tablespoons butter and salt to a boil Remove from the heat; stir in potato flakes. Let stand for 30 seconds or until liquid is absorbed. Whip with a fork until fluffy. Stir in sour cream and cheddar cheese. Spoon half into a greased 2-qt. baking dish.

Top with sausage and remaining potatoes. Sprinkle with Monterey Jack or mozzarella cheese. Melt remaining butter and toss with bread crumbs; sprinkle over the top. Bake, uncovered, at 350F for 30-35 minutes or until heated through and edges are golden brown. Yield: 4-6 servings. 

Source:  Taste of Home