Slow Cooker Meatball Sandwiches Recipe

Step 1

Preheat an oven to 350 F (175 C). In a large mixing bowl, combine beaten egg, 1/3 cup chopped yellow onion, breadcrumbs, salt, oregano, and 1/4 teaspoon black pepper. Mix well. Add ground beef and stir well again.

Step 2

Shape beef mixture into 32 meatballs. Arrange meatballs in a single layer on a baking sheet. Bake in preheated oven for 25 minutes.

Step 3

Turn off the oven. Remove baked meatballs and drain off fat.

Step 4

In a 4-quart (4 L) slow cooker, combine tomato sauce, brown sugar, mustard, chili powder, garlic salt, hot pepper sauce, remaining chopped onion, and remaining black pepper. Stir well. Add baked meatballs and stir gently to coat with sauce.

Step 5

Cover the pot and cook on low-heat setting for 3-4 hours.

Step 6

Turn off the slow cooker and open the lid. Stir meatballs well before serving.

Step 7

To serve, arrange four meatballs in each bun. Pour the sauce over meatballs, then sprinkle with shredded cheese. Serve hot.