Juicy, golden-brown meatballs with a gooey melted cheese center, perfect as an appetizer or main dish.

Mix ground beef with breadcrumbs, egg, salt, and pepper until well combined.
Take a portion of the meat mixture and flatten it in your palm.
Place a cube of cheddar cheese in the center and wrap the meat around it, sealing completely to form a ball.
Repeat with the remaining mixture to form all the meatballs.
Cook the meatballs in a skillet over medium heat, turning occasionally, until browned and cooked through.
Serve warm, cutting one open to reveal the melted cheese center if desired.