Overnight Mashed Potato Casserole
Creamy overnight mashed potato casserole features fluffy potatoes, rich cream cheese, and savory onions, making it a perfect comfort dish for holiday gatherings or family dinners.
Ingredients
Instructions
- Mash hot potatoes in a large mixer bowl.
- Add cream cheese in small pieces and then butter.
- Beat well until the cheese and butter are melted and completely mixed.
- Mix the eggs, milk, and onions, then add to the potato mixture along with the salt and pepper.
- Beat well until light and fluffy.
- Place the mixture in a greased 9-inch round casserole dish.
- Refrigerate overnight.
- Bake in a preheated oven at 350°F for 45 minutes until lightly browned on top.
Tips & Substitutions
For a creamier texture, consider using half-and-half instead of milk. If you're short on time, you can use pre-cooked frozen potatoes. Additionally, mixing in some garlic powder or chives can enhance the flavor. For a twist, try adding cooked bacon bits or shredded cheese to the mixture before baking.
Serving Suggestions
This casserole pairs beautifully with a crisp green salad or roasted vegetables for a balanced meal. It's perfect for holiday gatherings or potlucks, complementing dishes like turkey or ham. For a vegetarian option, serve with a side of sautéed greens or a hearty lentil dish. Consider browsing more American recipes for additional ideas.
Storage & Reheating
Store any leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, simply cover the casserole with foil and bake at 350°F for about 20-30 minutes until heated through. You can also microwave individual portions for a quick meal.
Nutrition & Diet Analysis (per serving)
Each serving of Overnight Mashed Potato Casserole contains roughly 823 calories, with 13g protein, 114g carbohydrates, and 35g fat. It is an excellent source of potassium (54% of the Daily Value), vitamin C (46% of the Daily Value), and dietary fiber (31% of the Daily Value), and a good source of iron. It also contributes 9g of dietary fiber toward your daily target.
Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.
* % Daily Values based on a 2,000 calorie diet (FDA 2020).
Frequently Asked Questions
Can I make this casserole ahead of time?
Yes, this casserole is designed to be made ahead. After preparing the mixture, simply refrigerate it overnight, and bake it the next day. This allows the flavors to meld and makes it perfect for busy days or special occasions.
What type of potatoes work best for this recipe?
Russet potatoes are ideal for mashing due to their starchy texture, which yields a light and fluffy result. However, Yukon Gold potatoes can also be used for a creamier, buttery flavor. Avoid waxy potatoes as they don't mash as well.
Can I freeze the mashed potato casserole?
Yes, you can freeze the casserole before baking. Just cover it tightly with plastic wrap and then foil. It can be frozen for up to 2 months. When ready to use, thaw it in the refrigerator overnight and then bake as directed.
Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).