Make Ahead Baked Potatoes. Reheat in a slow cooker on medium low, add them to your slow cooker and mix in a. Slices of russet potatoes baked into a creamy, cheesy sauce complement baked ham, prime rib or roast turkey.

Make ahead and refrigerate or freeze your mashed potatoes once prepared, let the mashed potatoes cool completely, then cover and store in the fridge for up to two days. The casserole is simple to make, but all the peeling and slicing of the potatoes isn't practical when you're short on time. You may need to add a little more milk and/or cream to thin them back out, as they do tend to become stiffer as they sit.