Mac and Cheese Stuffed Meatloaf

Heat oven to 350ºF.

Prepare Dinner as directed on package.

Meanwhile, mix meat, onions, bread crumbs, egg and 2 Tbsp. A.1. just until blended. Divide meat mixture in half; pat each half into 10x8-inch rectangle on sheet of parchment paper.

Reserve 1/2 cup cheddar. Mix remaining cheddar with Dinner; spread over meat mixture, starting at one short end of each rectangle and spreading to within 3 inches of opposite end.

Roll up each rectangle, starting at Dinner-covered end and removing parchment as meatloaf is rolled; press ends and edges of meatloaf together to seal. Use parchment to transfer meatloaves, seam sides down, to 2 (13x9-inch) pans sprayed with cooking spray. Discard parchment.

Bake meatloaves 25 min. Whisk ketchup and remaining A.1. until blended; spoon over meatloaves. Sprinkle with reserved cheddar. Bake 10 min. or until meatloaves are done (160ºF). Let stand 10 min. before slicing to serve.