Can I use bone-in chicken thighs instead of boneless breasts?
Yes, but increase cooking time to 25-30 minutes to ensure thighs are cooked through. Thighs stay juicier but require longer braising.
What can I substitute for provolone cheese?
Swiss, gruyere, or mozzarella work well. Gruyere adds nuttiness similar to French onion soup; mozzarella is milder.
How do I store leftovers?
Cover and refrigerate for up to 3 days. Reheat gently on the stovetop over low heat with a splash of water to prevent drying.
Can I make this ahead?
Prepare and refrigerate the full recipe unbaked for up to 24 hours, then cook just before serving. Add 5 minutes to cooking time if starting cold.
Why is my sauce watery?
This is normal with soup mix. Simmer uncovered for 2-3 extra minutes after the chicken is done to reduce liquid and concentrate flavor.