Step 1.
Brown the ground beef in a large skillet over medium heat for 6–8 minutes, breaking it into crumbles. Drain excess grease if necessary.
[ ] Step 2.
Add the diced onion and bell pepper. Cook for 3–4 minutes until softened, then add the garlic and cook for 30 seconds.
[ ] Step 3.
Stir in the ketchup, tomato sauce, Worcestershire sauce, mustard, brown sugar, paprika, salt, and black pepper.
[ ] Step 4.
Simmer over medium-low heat for 8–10 minutes, stirring occasionally, until the sauce thickens and the beef reaches 160°F (71°C).
[ ] Step 5.
Toast the hamburger buns if desired. Spoon the hot filling onto the buns and serve immediately.