In a small bowl, whisk together the ketchup, brown sugar, mustard, and Worcestershire sauce. Set aside.
½ cup ketchup, 2 tablespoons brown sugar, ¼ cup mustard, 2 tablespoons Worcestershire sauce
In a large bowl, beat the eggs. Add the shredded cheese, crushed crackers, chopped onion, bell pepper, salt, and pepper. Mix well to combine.
1 cup onion, ½ cup bell pepper, ½ cup sharp cheddar cheese, 2 medium eggs, Salt and pepper, 1 ½ cups Ritz crackers
Gently fold in the ground beef until just combined—be careful not to overmix, or the meatloaf may become dense.
2 pounds lean ground beef
Transfer the beef mixture to the prepared loaf pan and press it in evenly. Bake in the air fryer at 350°F (180°C) for 15 minutes.
Remove the meatloaf from the air fryer and spread most of the ketchup topping over the top, saving a few spoonfuls for serving.
Return to the air fryer and bake for another 15 minutes, or until the internal temperature reaches 160°F (71°C). Let the meatloaf rest for 5–10 minutes before slicing.
Serve with the reserved sauce and your favorite sides like mashed potatoes or green beans.