01 -
Set oven to 350°F to allow sufficient preheating.
02 -
In a large bowl, combine crushed Ritz crackers, lean ground beef, onion soup mix, egg, ketchup, and half of the barbecue sauce. Blend thoroughly until evenly incorporated.
03 -
Press the prepared meat mixture firmly and evenly into the base of a casserole dish to create a uniform layer.
04 -
Boil elbow macaroni in 2 cups of water following packaging instructions until al dente, then drain well.
05 -
Mix drained macaroni with butter, kosher salt, onion powder, garlic powder, ground black pepper, milk, and 1 cup of shredded cheddar cheese in a large bowl until cheese is melted and pasta is coated.
06 -
Spread the macaroni and cheese mixture evenly over the meatloaf layer in the casserole dish.
07 -
Sprinkle the remaining cheddar cheese over the pasta and drizzle with remaining barbecue sauce. Bake uncovered for 25 to 30 minutes, or until cheese is melted and top is bubbling.