First, add a slow cooker liner to your crock pot for easy clean up. You will thank me later!
Second, combine the garlic, sour cream, pasta sauce, and seasonings into the slow cooker. Stir to combine.
Third, add the chicken breasts and cover with the pasta sauce and sour cream mixture.
Depending on your crock pot, cook on HIGH for 1.5-2 hours (LOW for 3-4) hours...or until a meat thermometer inserted into the thickest part of the chicken registers 165F.
Serve with a little extra sauce and garnish with chopped spinach for color. Enjoy!