Can I prepare this casserole the night before?
Yes. Assemble completely, cover, and refrigerate up to 12 hours. Add 10–15 minutes to bake time if baking from cold.
What's the best way to reheat leftovers?
Cover with foil and warm in a 325°F oven for 15–20 minutes, or microwave individual portions for 1–2 minutes until heated through.
Can I use fresh potatoes instead of frozen hash browns?
Yes. Peel, dice, and parboil fresh potatoes for 5 minutes, then drain well before layering to avoid excess moisture.
How do I know when the casserole is done?
The eggs should be set with no jiggle in the center, and the top should be golden. A knife inserted near the center should come out clean.
Can I freeze this casserole?
Yes. Cool completely, wrap tightly in plastic wrap and foil, and freeze up to 3 months. Thaw overnight and bake as directed, adding 10–15 minutes.