American Sloppy Joe (Saucy Ground Beef Sandwich)

In a large skillet or Dutch oven, heat olive oil over medium heat. Add the ground beef and cook until browned, breaking it up with a spoon, about 5-7 minutes. Drain any excess fat. Add the chopped onion, garlic, and green bell pepper, and cook for another 5-7 minutes until the vegetables are softened.

Stir in the tomato paste and cook for 1 minute. Then, add the ketchup, Worcestershire sauce, Dijon mustard, brown sugar, apple cider vinegar, beef broth, salt, and pepper. Mix well and bring the mixture to a simmer.

Once simmering, reduce the heat to low and cook uncovered for 15-20 minutes, or until the sauce has thickened and the flavors have melded. Stir occasionally. Taste and adjust seasonings if needed. Serve hot on toasted hamburger buns.