Preheat oven to 350 degrees F (175 degrees C).
In a large cast-iron skillet, cook the Ham (2 cup) in Butter (1 tablespoon) until browned. Set aside.
In the same skillet, slowly cook the Onion (1) in the remaining butter until soft and caramelized.
Over low heat, stir in the Cream Cheese (12 ounce) until melted. Add the Sharp White Cheddar Cheese (1 1/3 cup), Cheddar Cheese (1 1/3 cup), Monterey Jack Cheese (1 1/3 cup), Milk (4 tablespoon), Frank's® RedHot® Sauce (2 tablespoon), Paprika (1/2 teaspoon), Butter (2 tablespoon) including the browned ham and Scallion (3) and stir well to combine.
Place skillet into the oven and bake for 15 to 20 minutes until heated and bubbly. Serve warm with your favorite crackers or bread. Enjoy!