01 -
Cook ground beef in a large skillet over medium heat, breaking it into pea-sized pieces, until browned, about 5 to 7 minutes. Stir in Worcestershire sauce, salt, and pepper, then transfer mixture to a bowl.
02 -
Melt butter in the same skillet over medium heat. Add onion and bell pepper; cook and stir until translucent, about 5 to 7 minutes. Add beef mixture back into the skillet and stir to combine. Remove from heat and let cool slightly, about 10 minutes.
03 -
Lay egg roll wrappers on a flat surface. Place 1/2 slice of American cheese onto each wrapper, then top with approximately 3 tablespoons of filling. Pull the bottom left corner up over the filling, fold the two sides in, moisten edges with water, and roll tightly.
04 -
Fill a large saucepan with about 1 inch of oil and heat over medium-high heat. Working in batches of 3 to 4, fry the egg rolls until browned on all sides, about 3 to 4 minutes. Drain on a paper towel-lined plate.