Heat a large skillet over medium-high heat. Add the ground beef and onion. Cook for 6 to 8 minutes, breaking the beef into small crumbles, until browned and the onion is tender.

Drain excess grease from the skillet.

Add the minced garlic and cook for 30 seconds.

Stir in the ketchup, tomato paste, Worcestershire sauce, yellow mustard, brown sugar, smoked paprika, salt, and black pepper.

Reduce the heat to medium-low and simmer for 3 minutes, stirring occasionally.

Add the softened cream cheese and stir until melted and completely blended into the beef mixture.

Stir in ½ cup of the shredded cheddar cheese.

Transfer the mixture to an 8-inch baking dish and spread evenly.

Sprinkle the remaining ½ cup cheddar cheese over the top.

Bake for 10 to 12 minutes, or until the dip is hot and the cheese is melted.

Sprinkle with sliced green onions, if using.

Serve warm with sturdy tortilla chips, toasted baguette slices, crackers, or fresh vegetables.