In a small bowl mix together ketchup, Worcestershire sauce, brown sugar, garlic powder, onion powder garlic salt, mustard, and black pepper. Set aside.
Add ground beef, onion and minced garlic to a medium skillet and cook over medium-high heat until it begins to brown.
Add bell pepper and cook until the meat is browned and the pepper is soft.
Add the sauce mixture to the meat, and bring the mixture to a boil.
Reduce heat, and simmer covered for 20 minutes.
Remove the lid and simmer for about 5 minutes more or until the mixture thickens (if you like thicker sloppy joes).
Serve with your favorite garnishes on your favorite buns.
