Sprinkle chicken breasts lightly with salt, pepper and paprika. Place chicken breasts in crock pot. Mix white wine, soup and mushrooms until well combined.
Pour over chicken breasts in crockpot. Sprinkle with paprika, cover and cook on low 6 to 8 hours (high 2 ½ to 3 ½ hours).
Remove chicken breasts and stir in sour cream mixture during last 30 minutes. Serve sauce over chicken with rice or noodles.
