Heat large skillet over medium high heat. Add ground beef with seasoned salt and onion powder. Cook, stirring frequently, until beef is fully browned, about 5-6 minutes.
Once beef is cooked, remove from skillet with a slotted spoon. Drain all but about 2 tbsp grease in skillet.
Add chopped onion, bell pepper, carrot, and garlic to skillet. Cook until veggies are softened, about 7-8 minutes.
Return beef to skillet and add all of the remaining ingredients. Stir together well.
Turn heat to low and simmer, stirring ocassionally for 15 minutes. Serve on buns.