In a skillet over medium heat, cook the ground beef until browned, breaking it apart with a spatula.

Drain excess fat if necessary.

Add the chopped onion and green bell pepper to the skillet and cook until softened, about 5 minutes.

Stir in the ketchup, Worcestershire sauce, brown sugar, mustard, garlic powder, onion powder, salt, and pepper.

Simmer for about 10 minutes, stirring occasionally.

Spoon the mixture onto the hamburger buns and serve hot.