Preheat oven to 375°F. Cook sausage in large skillet over MEDIUM-HIGH heat 8-10 minutes or until thoroughly cooked, stirring frequently; drain. Place in large bowl.
Add cream cheese, ½ cup Parmesan cheese, mayonnaise, sour cream and milk; mix well.
Stir in broccoli; spoon into lightly greased baking dish. Sprinkle with remaining Parmesan cheese.
Bake 30-40 minutes or until hot and bubbly.
Serve with chips.