In a large bowl, use your hands or a fork to gently combine the ground beef, cheese, cracker crumbs, onion, eggs, pickle relish, Worcestershire sauce, mustard, kosher salt, and 2 tablespoons of brown sugar.
Shape into an 8 x 5-inch loaf and place on a parchment-lined rimmed baking sheet.
Bake, uncovered, for 1 hour. While the meatloaf is in the oven, stir together the ketchup and remaining 2 tablespoons of brown sugar for the glaze. Spread the glaze on top of the meatloaf. Bake for 10-15 more minutes, until an instant-read thermometer inserted into the thickest portion registers 160°F.
Remove the meatloaf from the oven and let rest for at least 10-15 minutes before slicing and serving.
Notes
Grate the cheese by hand (instead of using a package of pre-shredded cheese) for the best flavor and texture.
Use your handsor a fork to gently combine the meatloaf mixture. Be careful not to over-mix the meat, or it will become dense and mushy.
Lean ground beef (85%-93% lean) works best in this recipe. You need some fat to keep the meatloaf moist, but you don’t want it to be too greasy. I typically use ground round (85%), but ground chuck or a combination is fine, too!
You do not need to cover the meatloaf while it’s baking.
You’ll know the meatloaf is done when it reaches an internal temperature of 160°F on an instant read meat thermometer and the juices run clear.
Place a pan of warm water on the rack below the meatloaf in the oven. It’s not necessary, but this moist environment will prevent the meatloaf from cracking.
Garnish with fresh parsley or other herbs for a bright, colorful, and flavorful finishing touch.