Line the inside of your pot with a slow cooker liner or spray the bottom inside with non-stick cooking spray.
Place the chicken breasts in the bottom of the prepared pot in a single layer (if possible).
Pour the parmesan garlic sauce over the chicken, topping with cream cheese cubes and parmesan cheese.
Cover with the lid and cook on low for 4 hours or on high for 2 hours. Check the temperature of the chicken breasts to ensure they are at least 165ºF.
Remove the chicken from the slow cooker to a serving platter and tent with foil. Let rest for 10 minutes.
Add reserved pasta water to the sauce and whisk until the sauce looks glossy and smooth. Remove and set aside one cup of sauce.
Stir the fettuccine into the sauce until covered with sauce.
Slice the chicken and drizzle the reserved sauce over the chicken.
Notes
Any cooked pasta can be substituted for the fettuccine.I do not recommend using low-fat cream cheese with this recipe as it’s more likely to break down during the cooking process.Cook Garlic Parmesan on low in the slow cooker. Chicken breasts are low in fat and can dry out quickly when slow cooking. Using a lower temperature helps your chicken stay moist and juicy.How to Store and Reheat:Store leftovers in an airtight container in the refrigerator for up to five days. When you’re ready for another bowl of this tasty dish, put some in a bowl, cover, and heat in the microwave in 30-second increments until it’s warmed all the way through.