Cheesy Tuna Noodle Casserole

What You Need
1 bag (16 oz.) frozen vegetable blend with broccoli, carrots, cauliflower (3 cups)
1 pkg. (14 oz.) KRAFT Deluxe Macaroni & Cheese Dinner Made With 2% Milk Cheese
3/4 cup fat-free milk
1/4 cup KRAFT Light Zesty Italian Dressing
1 can (12 oz.) or 2 cans (6 oz. each) white tuna in water, drained
1 cup KRAFT 2% Milk Shredded Sharp Cheddar Cheese, divided
Make It

PREHEAT oven to 375°F. Place vegetables in colander in sink. Cook Macaroni as directed on package. Pour over vegetables in colander to drain and quickly thaw vegetables.

RETURN macaroni and vegetables to same saucepan. Add Cheese Sauce, milk and dressing; mix well. Add tuna and 1/2 cup of the Cheddar cheese; mix well. Spoon into 2-qt. round casserole dish; cover with foil.

BAKE 35 min. or until heated through. Uncover; top with remaining 1/2 cup cheddar cheese. Bake an additional 3 to 4 min. or until cheese is melted.