Can I make scalloped potatoes ahead of time?
Yes. Assemble the slow cooker insert (slice potatoes, layer with cheese, pour sauce) up to 24 hours ahead, refrigerate, then cook on low for 6-7 hours. Add 30-45 minutes cooking time if starting from cold.
What type of potatoes work best for scalloped potatoes?
Yukon Gold potatoes are ideal because they're waxy, hold their shape when sliced thin, and cook evenly. Russet potatoes will break down more; avoid them.
How do I know when scalloped potatoes are done?
Potatoes are done when a fork easily pierces the thickest slices and the sauce is bubbly around the edges. Slow cookers vary; check at 5.5 hours, then every 30 minutes.
Can I substitute the cheese?
Yes. Use Swiss, fontina, or smoked cheddar. Avoid pre-shredded cheese with anti-caking agents when possible—freshly shredded melts more smoothly.
Can I freeze leftover scalloped potatoes?
Yes, freeze in an airtight container for up to 3 months. Thaw in the refrigerator and reheat covered in a 350°F oven for 25-30 minutes until warmed through.