At home pack the dry ingredients in a quart freezer or sandwich bag. Mark bag “Add ½ cup water”. Put the cheese in a small bag, and place it and the chicken with the bag.
Bring water to a near boil. Add the chicken with its broth to the bag along with the hot water. Stir well, seal tightly and put in a cozy for 10 minutes. Stir again and top with Parmesan cheese.
Bring the water to a boil, add the chicken with broth and water to the dry ingredients. Stir well, cover tightly and let sit for 10 minutes. Stir again and top with the Parmesan cheese.
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Dry Alfredo mix is sold in packets, often in the pasta aisle in grocery stores.