Heat a skillet over medium-low heat and add the ground beef. Stir occasionally as the fat renders, breaking the meat into crumbles. Once it’s partially cooked, stir in the chopped onions and garlic. Cook until the meat is browned and the onions have softened.

Sprinkle in kosher salt, black pepper, and Worcestershire sauce. Give it a good mix to evenly distribute the flavors. Keep the meat over medium heat for a few minutes, allowing the seasonings to infuse into the filling.

Slice the hoagie rolls in half and toast them on a griddle or skillet until golden brown. This step adds texture and prevents the bread from getting soggy.

Divide the beef filling into portions in the skillet and place two slices of American cheese on each portion. Allow the cheese to melt completely, then roughly chop it into the beef with a spatula.

Spread a little mayo on the cut side of each roll. Scoop the cheesy beef filling onto the bottom half of the roll. Top with shredded lettuce and tomato slices. Close the sandwich with the other half of the roll.

Cut the sandwich in half, serve immediately, and indulge in the melty, savory goodness!