01 -
In a large skillet over medium-high heat, cook the ground beef and chopped onion, breaking up the meat as it cooks until fully browned. Drain excess grease to keep the filling firm.
02 -
Reduce heat to medium. Stir in shredded cheddar, ketchup, mustard, Worcestershire sauce, salt, and black pepper. Mix until the cheese is melted and ingredients are evenly blended. Remove from heat and let the mixture cool completely.
03 -
Place an egg roll wrapper on a clean surface in a diamond orientation. Spoon about 2 tablespoons of cooled cheeseburger filling into the center of the wrapper.
04 -
Fold the bottom corner over the filling, fold in the sides, and roll up tightly. Brush the top edge lightly with beaten egg to seal. Repeat with remaining wrappers and filling.
05 -
In a deep fryer or heavy-bottomed pot, heat vegetable oil to 350°F. Use a thermometer to monitor temperature accurately.
06 -
Working in batches, fry egg rolls in hot oil for 2–3 minutes per side until all surfaces are golden brown and crisp. Avoid overcrowding to maintain oil temperature.
07 -
Transfer fried egg rolls to a paper towel-lined plate to drain excess oil. Serve immediately with your preferred dipping sauces.