In a large bowl, combined the ketchup, brown sugar, and mustard. Remove ½ c. topping; set aside. Add the eggs, Worcestershire sauce, cereal, and seasonings to remaining ketchup mixture. Let stand for 5 minutes. Crumble beef over cereal mixture and mix well.
Press meat mixture into 24 muffin cups (about ⅓c. each). Bake at 375 degrees for 18-20 minutes. Drizzle with reserved ketchup mixture; bake 10 minutes longer or until meat is no longer pink.
Recipe by The Gingham Apron at https://www.theginghamapron.com/meat-loaf-minatures/