Can I use fresh hash browns instead of frozen?
Yes, but squeeze out excess moisture first to prevent a watery casserole. Use the same amount by weight.
How do I know when the casserole is done?
Bake for 40 minutes until the top is golden and the mixture is hot and bubbly around the edges.
Can I make this casserole ahead of time?
Yes, assemble it in the baking dish, cover with foil, and refrigerate up to 24 hours. Add 5-10 minutes to baking time if baking from cold.
What can I substitute for sour cream?
Greek yogurt works as a 1:1 swap, though the casserole will be slightly less rich.
Can I double this recipe?
Yes, use two 9x13 inch baking dishes and bake for the same 40 minutes, checking both for doneness.