Mom's Left-Over Mashed Potato Casserole

Use mashed potatoes that are well-seasoned for the best flavor.

Grease the baking dish generously to prevent sticking.

Add spices like paprika or cayenne for a little heat.

Try different toppings, such as crispy onion strings or additional cheese varieties.

Let the casserole sit for a few minutes after baking for easier serving.

If the casserole is frozen, allow it to defrost in the refrigerator before baking.

Add a layer of shredded cheese on top during the last 5 minutes of baking for an extra gooey finish.

Try adding different proteins like shredded chicken or turkey, cubed ham, sliced smoked sausage for a heartier casserole.

What can I do to make my mashed potatoes more flavorful before using them in the casserole?

Consider adding butter, garlic, or herbs like thyme or parsley to your mashed potatoes for extra flavor.

Can I use frozen or instant mashed potatoes instead of homemade?

You can use frozen or instant mashed potatoes. Homemade mashed potatoes tend to be creamier and more flavorful so adjust any ingredients as needed.

What if my mashed potatoes are too dry or thick?

Add a bit of milk or cream to loosen them up before mixing with the sour cream.

What if my mashed potatoes are too thin?

Reduce the amount of sour cream. Start by adding half the amount called for and increase it slowly while mixing.

Can I use a different type of cheese?

You can substitute other cheeses like mozzarella, Monterey Jack, or a blend for a different flavor.

Is there a way to make this dish healthier?

You can lighten the recipe by using Greek yogurt in place of sour cream and reducing the amount of cheese and/or bacon.

Can I add veggies to the casserole?

Chopped broccoli, spinach, or cauliflower can be mixed in with the potatoes.

Can I make this casserole ahead of time?

You can assemble the casserole and refrigerate it covered until you're ready to bake. Just allow for additional cooking time if baking from cold.

How long can I store leftovers?

Leftover mashed potato casserole can be stored in the refrigerator for 3-4 days. Be sure to keep it covered.

Can I freeze the assembled casserole?

You can freeze the assembled casserole before baking. Wrap it tightly in plastic wrap and foil; it can be frozen for 2-3 months. Thaw before baking.

How do I reheat the casserole?

To reheat, cover the casserole with foil and bake at 350 degrees F until heated through, usually about 20-30 minutes.

What is the best way to portion and serve the casserole?

Using a spatula, cut into squares or rectangles to serve. A pie server can also help with portioning.

Baking Dish (9x13-inch): For layering and baking the mashed potato casserole. It should be greased before use to prevent sticking.

Measuring Cups: Used for measuring the mashed potatoes, grated cheese, and green onions.

Mixing Bowl: A large bowl for combining the mashed potatoes and sour cream before layering them in the baking dish.

Spatula or Spoon: For mixing the ingredients together and for spreading the mashed potato mixture evenly in the baking dish.

Grilled Chicken: Serve the loaded mashed potato casserole alongside grilled chicken to create a filling meal. The smoky flavors of the grilled chicken will contrast nicely with the creamy potatoes.

Steamed Broccoli: A side of steamed broccoli introduces a fresh, slightly bitter element that balances the richness of the casserole.

BBQ Brisket: Pairing with bbq brisket works well because the sweet and tangy flavors of the brisket enhance the savory, cheesy potatoes.

Roasted Brussels Sprouts: Roasted Brussels sprouts add a crisp texture and a nutty flavor that complements the creaminess of the mashed potato casserole.

Sauteed Spinach: A light saute of spinach with garlic can add color and a nutritious component to the meal, providing a nice balance and freshness.

Tomato Salad: A refreshing tomato salad can cut through the richness of the potatoes, providing acidity and brightness.

Crispy Onions: Scatter crispy fried onions on top for an extra crunch and a burst of savory flavor.