The oven should be preheated to 350 F.
The ground beef should be browned in a big saucepan. Add the onions when the ground beef is about halfway done. After draining, set away.
Combine the beans, ground beef, onions, ketchup, Worcestershire sauce, mustard, brown sugar, and spices in a large mixing basin.
Mix thoroughly until everything is properly incorporated. To taste, add salt and pepper.
Pour the mixture into the casserole dish that has been oiled after everything has been incorporated. Place in the oven, uncovered, and bake for 1 hour.
Before serving, let the dish settle for 10 minutes. Serve with chunks of smoked chicken on top.