01 -
Place raw chicken breasts or thighs in the bottom of the crock pot.
02 -
Add the chopped onion, minced garlic, Italian seasoning, crushed red pepper flakes if using, and crushed tomatoes to the crock pot.
03 -
Pour the low-sodium chicken broth over the ingredients in the crock pot.
04 -
Cover and cook on low for 6 to 7 hours or on high for 3 to 4 hours, until the chicken is fully cooked and tender.
05 -
Remove the chicken pieces, shred with two forks, then return the shredded chicken to the crock pot.
06 -
Stir in the heavy cream and freshly grated Parmesan cheese until fully blended.
07 -
If a thicker consistency is desired, combine the cornstarch with cold water to create a slurry, then stir it into the soup and cook an additional 10 to 15 minutes until thickened.
08 -
Taste and adjust with salt and pepper as needed. Serve warm, garnished with extra Parmesan if desired.