Cheesy Mac-Topped Casserole

1 pkg. (14 oz.) KRAFT Deluxe Macaroni & Cheese Dinner Made With 2% Milk Cheese
1 lb. extra lean ground beef
3 cloves garlic, minced
1-1/2 tsp. dried oregano leaves
1 can (28 oz.) diced tomatoes, undrained
1 pkg. (9 oz.) frozen green beans, thawed, drained
1 cup KRAFT 2% Milk Shredded Mild Cheddar Cheese
Make It

PREHEAT oven to 375°F. Prepare Dinner as directed on package. Meanwhile, brown meat with garlic and oregano in large nonstick skillet; drain. Add tomatoes with their liquid and the beans; mix well.

SPOON meat mixture into 13x9-inch baking dish; top evenly with prepared Dinner. Cover with foil.

BAKE 30 min. or until heated through. Remove from oven; uncover. Sprinkle with cheese. Let stand 5 min. or until cheese is melted.