Step 1

In a small bowl mix together the mascarpone and the mustard. Set aside.

Step 2

Preheat the broiler to high.

Step 3

Heat a large oven proof skillet over medium high heat. Add the oil and continue to heat for an additional minute. Season the chicken breasts evenly with the salt. Place the chicken in the pan and cook for approximately 4 minutes on the first side or until golden brown. Flip the chicken and cook for an additional 2 minutes or until just cooked through. Remove from the heat. Place 1/2 slice of swiss cheese on each chicken breast. Lay 2 slices of ham on top of the cheese on each breast. Divide the mustard sauce evenly over the ham and top with the remaining cheese slices. Place under the broiler for 2 minutes or until the cheese is melted, golden brown and bubbly.