This recipe is credited to Fiorella's Jack Stack Barbecue in Kansas City, MO. Nothing like Kansas City barbecue, and this is a very popular side dish served at the "Stack."
- Melt butter; stir in flour and garlic powder.
- Add milk; cook & stir over medium heat.
- Heat until thick and bubbly; stir in cheeses. Cook/stir over low heat until cheeses melt; stir in corn & ham.
- Bake in 2 qt casserole for 45 minutes at 350.