Turkey Potato Tetrazzini

1 jar (16 ounces) Alfredo sauce
1 cup milk
7 medium potatoes, peeled and thinly sliced
4 tablespoons grated Parmesan cheese, divided
1-1/2 cups diced cooked turkey or chicken
2 cups (8 ounces) shredded Swiss cheese, divided
1 package (10 ounces) frozen chopped broccoli, thawed

In a large bowl, combine Alfredo sauce and milk; spread 1/4 cup into a greased 13-in. x 9-in. x 2-in. baking dish. Top with a third of the potatoes; sprinkle with 1 tablespoon Parmesan cheese.

In another bowl, combine the turkey, 1-1/2 cups Swiss cheese and broccoli; spoon about 2 cups over potatoes. Top with about 2/3 cup sauce mixture. Repeat layers twice.

Cover and bake at 400° for 45 minutes. Top with remaining cheeses (dish will be full). Bake, uncovered, 20-25 minutes longer or until potatoes are tender. Let stand for 5 minutes before serving. Makes 12-15 servings.