Creating Cheeseburger Egg Rolls is a fun and rewarding process. Follow these steps to ensure perfect results:

1. Cook the Beef: In a large skillet over medium heat, cook the ground beef until no longer pink. Drain excess fat if necessary.
2. Add Onion: Mix in the chopped onion and sauté until translucent, about 5 minutes.
3. Season Mixture: Stir in ketchup, mustard, Worcestershire sauce, salt, and pepper. Cook for an additional 2-3 minutes, allowing the flavors to meld.
4. Add Cheese: Remove from heat and add in the shredded cheddar and mozzarella cheese. Stir until the cheese is melted and well combined.
5. Prepare Egg Rolls: Lay out an egg roll wrapper on a flat surface. Place a generous spoonful of the cheeseburger mixture in the center.
6. Fold Wrapper: Moisten the edges of the wrapper with a little water. Fold the bottom over the filling, then fold in the sides, and roll tightly to seal.
7. Heat Oil: In a deep skillet or fryer, heat oil to 350°F (175°C) for frying.
8. Fry Egg Rolls: Carefully place the egg rolls in the hot oil, frying in batches to avoid overcrowding. Fry until golden brown, about 3-4 minutes on each side.
9. Drain Excess Oil: Remove the egg rolls using a slotted spoon and place them on a paper towel to drain any excess oil.
10. Serve Warm: Enjoy your delicious Cheeseburger Egg Rolls hot with your favorite dipping sauces!