Crockpot Meatloaf For the Meatloaf: 1 ½ lbs ground beef – Opt for 80% lean for the best flavor and texture. ½ cup breadcrumbs – Helps bind the meatloaf and gives it structure. 1 small onion, finely chopped – Adds flavor and moisture. 1 egg, beaten – Essential for binding the ingredients. ½ cup milk – Adds moisture to keep the meatloaf tender. 1 tablespoon Worcestershire sauce – Enhances the savory flavor. 1 teaspoon garlic powder – For extra flavor. Salt and pepper to taste For the Topping: ¼ cu