In a large skillet, cook the ground beef over medium heat until browned and cooked through. Drain excess fat.

Return the skillet to medium heat. Add ketchup, brown sugar, mustard, Worcestershire sauce, onion powder, garlic powder, salt, and pepper. Stir well to combine and cook for 5 minutes.

While the meat mixture is simmering, toast the hamburger buns with butter until golden brown.

Spoon the meat mixture onto the toasted buns, top with pickles if desired, and serve immediately.