In a 12” Skillet add 1 tablespoon butter and diced onion. Over medium heat stir the onions until they soften then add ¾ of ham and mushrooms. Save the rest for garnishing on top.
Next add the seasoning, mustard, ketchup and Worcestershire. Continue stirring.
Add ground beef stirring until fully cooked.
Fold in cream cheese and mix until totally melted then turn heat to low.
Stir in half of the Swiss cheese until mixture is smooth.
Top mixture with remaining cheese, ham, mushrooms and chives.
Broil for about 4-5 minutes until Cheese is melted.'
Notes
Serve with additional mustard and ketchup along with shredded lettuce and tomato.