Can I use chicken breasts instead of thighs?
Yes, boneless skinless chicken breasts work but thighs stay moister during slow cooking. If using breasts, check for doneness at 3.5 hours to avoid overcooking.
When should I add the sour cream?
Add sour cream in the last 30 minutes of cooking to prevent curdling from prolonged heat exposure.
Can I make this ahead?
Cook the chicken and sauce, then refrigerate for up to 3 days. Reheat gently on low heat, stirring in sour cream just before serving.
What if I don't have cream of chicken soup?
Substitute with 1 cup chicken broth mixed with 2 tbsp cornstarch, or use cream of mushroom soup for deeper flavor.
How do I prevent the sauce from breaking?
Keep heat on low, add sour cream only in the final 30 minutes, and stir gently. Don't boil after adding dairy.