Brown the sausage and onion in a pan until no pink remains. Drain any excess fat.
Add the processed cheese and cream cheese to the pan. Stir over medium heat until melted.
Whisk in the mustard powder, milk, and Worcestershire sauce, and continue cooking until the mixture is hot and bubbly.
Stir in the sharp cheddar cheese until fully melted and combined.
Serve immediately with tortilla chips or crostini.
Prep Time: 10 min | Cooking Time: 10 min | Total Time: 20 min | Kcal: 290 | Servings: 8
