1. Combine cornmeal, flour, baking powder and soda, and salt in large bowl. Whisk combined buttermilk, egg yolks and 4 Tbsp. of the melted butter into dry ingredients. Stir in ham and cheese.
2. Beat egg whites until stiff peaks form. Fold into batter in 2 additions.
3. Portion batter into remaining 2 Tbsp. melted butter in large skillet on medium heat using #16 scoop. Cook 2 to 3 minutes per side or until cakes are puffed and golden brown. Add additional butter to skillet if needed.
4. Transfer cakes to 6 plates. Serve with maple syrup.
Nutritional information per serving: Calories 470; Total Fat 26g; Saturated Fat 12g; Trans Fat 0; Cholesterol 193mg; Sodium 743mg; Total Carbohydrate 42g; Dietary Fiber 2g; Total Sugars 5g; Protein 16g