Can I use frozen chicken breasts?
Yes, but thaw completely and pat dry before thinly slicing to ensure even cooking throughout the bake.
How do I know when the chicken is cooked through?
The chicken should reach an internal temperature of 165°F (74°C) when measured with a meat thermometer at the thickest part.
Can I make this ahead?
Yes, assemble the bake up to 24 hours in advance, cover tightly, and refrigerate. Add 10-15 minutes to baking time if baking from cold.
What can I substitute for ricotta cheese?
Cottage cheese (drained) or a mixture of cream cheese and Greek yogurt work as replacements with similar creaminess.
Can I use fresh spinach instead of frozen?
Yes, use about 2 cups of fresh spinach, sautéed and cooled, then squeeze out excess moisture before mixing into the ricotta filling.