Can I assemble this casserole ahead of time?
Yes. Assemble completely, cover, and refrigerate up to 24 hours before baking. Add 10–15 minutes to baking time if starting from cold.
What type of potatoes work best?
Russet potatoes are ideal because they hold their shape and absorb the creamy sauce. Yukon Gold works as a creamier alternative.
Can I substitute the cream soups?
Cream of chicken soup can replace one or both soups. For dairy-free, use cashew cream or coconut cream in place of sour cream and condensed soups.
How do I know when the casserole is done?
Potatoes should be fork-tender and the top lightly golden, typically 45–60 minutes at 350°F depending on potato thickness.
Can I freeze this casserole?
Yes, freeze unbaked up to 3 months. Thaw overnight and bake, adding 15 minutes to cooking time.