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Flavorful, thick, and creamy Alfredo sauce is totally achievable with this easy recipe. Prep this meal in under 30 minutes and let the slow cooker do all the hard work.
Heat the olive oil in a skillet over medium-high heat. Once hot, season the chicken breasts with salt and pepper and brown them in the pan, searing each side 1-2 minutes.*
Place the chicken breasts in the bottom of the slow cooker. Then sprinkle them with the garlic, Italian seasoning, and onion powder. Pour the chicken broth over the chicken breasts. Scatter the butter slices over the top of the chicken.
Cook on low for 4-5 hours* or until the chicken is cooked through and shreds easily. Remove the chicken. Shred the chicken and cover with aluminum foil. Set aside.
Add the heavy cream, cream cheese, and parmesan to the slow cooker. Stir the sauce until the cream cheese and parmesan have melted and then add the dry fettuccine.
Cook the fettuccine on high heat for about 30 minutes, until mostly cooked through.
Add the shredded chicken back in the slow cooker. Cook until the pasta is cooked through - about 10 minutes.
Turn off the slow cooker and let the sauce cool a bit to thicken - about 5 minutes.
If desired, garnish with fresh parsley and additional parmesan.
Notes
If you do not want to sear the chicken. You can skip the olive oil and place the chicken directly into the slow cooker.