This recipe is perfect for leftover ham but, you can add chicken or turkey too if you choose! Double the recipe!
Meanwhile, make the cheese sauce by adding butter and flour to a medium sauce pan on med/low heat. Stir to make a roux. As soon as the butter has melted and is mixed with flour, add half of the heavy cream until well mixed. Continue stirring. Add remaining cream and continue stirring until well incorporated. Add the chicken stock and continue stirring. Sauce will thicken in about 5 min or so. Always stir it so it get creamy. Add the cheese and stir until cheese melts. Remove from heat.
The cheese sauce and cutting the ham and turkey, which is the prep time (10 min) can be done while the pasta is cooking. Therefore, this casserole can be ready in about 35 min total time.