01 -
In a skillet over medium heat, cook the ground beef until thoroughly browned. Drain excess fat.
02 -
Add the diced onion, green bell pepper, and minced garlic to the beef. Cook, stirring occasionally, for 3–4 minutes until softened.
03 -
Incorporate ketchup, tomato paste, brown sugar, yellow mustard, Worcestershire sauce, salt, and pepper. Mix well and simmer for 5–7 minutes until the mixture thickens. Remove from heat.
04 -
Spread softened butter on one side of each bread slice.
05 -
Arrange 4 slices of bread, buttered side down, on a clean surface. Layer each with half the cheese, a generous spoonful of Sloppy Joe filling, followed by remaining cheese. Top with remaining bread slices, buttered side up.
06 -
Heat a skillet or griddle over medium-low heat. Cook sandwiches for 3–4 minutes per side, gently pressing, until the bread is golden and cheese melts.
07 -
Slice sandwiches and serve while hot.