Cover and cook on low for 4 hours or high for 3 hours.
Five minutes before serving top with the remaining swiss cheese slices and cover until melted.
Garnish with parsley.
Slice and serve.
Notes
Tips, Tricks & Storage
Shape the Loaf EvenlyForm the meat mixture into a uniform shape so it cooks evenly from edge to center. Lining the slow cooker with parchment paper or foil makes removal easier.Let It Rest After cooking, let the meatloaf rest for about 10 minutes. This allows the juices to absorb, so each slice stays moist.Serve With SidesMashed potatoes, buttered noodles, roasted veggies, or even a soft dinner roll to soak up all that tasty sauce.StorageStore leftovers in an airtight container in the fridge for up to 3 days. You can also freeze slices for up to 3 months — thaw overnight and reheat gently in the oven or microwave. If it thickens, add a small splash of broth or water to the sauce when reheating to loosen it up.
Variations
You can easily make a few small adjustments to make this recipe your own. For a hint of sweetness, add a few sautéed mushrooms or caramelized onions directly into the meat mixture. Want a bit of kick? Mix in a few dashes of hot sauce for depth. And if you prefer a little crunch, top with crispy fried onions just before serving.
Substitutions
Ground Beef → Ground Turkey or PorkGround turkey gives a leaner, lighter option, while pork adds extra richness. Both hold up beautifully in the slow cooker.Beefy Onion → Dry Onion Soup MixIf you don't have a package of beefy onion soup mix, dry onion soup mix works just as well. You can also add some thyme to the mix if you'd like.Breadcrumbs → Crushed Crackers or OatsIf you're out of breadcrumbs, either option works to bind the mixture without changing the flavor too much.Ketchup Topping → Gravy or BBQ SauceSkip the traditional ketchup glaze for a more savory finish. Onion gravy or a smoky barbecue sauce both complement the flavor nicely.Swiss Cheese → Gruyere or Provolone Any good melting cheese will work here. Each gives the dish a slightly different flavor profile. Top with the cheese just 5 minutes before serving so that it melts perfectly.