Begin by cooking the ground beef in a skillet over medium heat. Aim to sear the beef well before breaking it apart, striving for pieces about the size of a pea to maintain texture and avoid a minced meat consistency.

Season the seared beef with salt, pepper, and Worcestershire sauce. Stir the mixture gently to combine, then remove the beef from the skillet and set aside.

In the same skillet, melt the butter. Add the chopped onions and green bell pepper, cooking them until they are well browned and caramelized.

Reintroduce the beef to the skillet with the caramelized onions and bell pepper, mixing them together thoroughly. Remove from heat and allow the mixture to cool.

Prepare your workspace for assembling the egg rolls. Lay out the egg roll wrappers on a clean, flat surface.

Place half a slice of American cheese on each wrapper, followed by approximately three tablespoons of the beef mixture.

To assemble the egg rolls, fold the bottom left corner of the wrapper over the filling, then fold in the sides. Moisten the edges of the wrapper with water and roll tightly to ensure it is sealed.

Heat canola oil in a pan to a depth of about one inch for frying. Once the oil is hot, fry 3-4 egg rolls at a time until they are golden brown and crispy.

Remove the egg rolls from the oil and allow them to drain on a cooling rack or a brown paper bag to remove excess oil.

Enjoy these Philly Cheesesteak Egg Rolls as a delicious snack or appetizer, offering a delightful twist on the classic cheesesteak sandwich in a crispy, golden package. Perfect for parties, gatherings, or a savory treat, they're sure to be a crowd-pleaser.