Mashed Potato Casserole
If you’ve ever dreamed of transforming mashed potatoes into a show-stopping main event, this Mashed Potato Casserole is your dream come true. We’re talking layers of creamy, buttery potatoes loaded with melty cheese, crispy bacon, and all the cozy feels you crave in comfort food. It’s rich, it’s satisfying, and it might just become the dish everyone begs you to bring to the next gathering. Trust me this one’s a game-changer!
Why You’ll Love Mashed Potato Casserole
This recipe isn’t just about the ingredients it’s about creating moments. Whether you’re cooking for a casual family dinner, hosting a get-together with friends, or simply indulging in some comforting flavors for yourself, this dish is versatile enough to fit the occasion. Here’s why it’s a favorite:
Versatile: Great as a side dish or hearty enough to be the main attraction dress it up or keep it simple.
Budget-Friendly: Uses everyday ingredients you likely already have on hand.
Quick and Easy: Especially if you’re working with leftover mashed potatoes it comes together in no time.
Customizable: Add your favorite cheeses, swap bacon for ham, or mix in herbs to make it your own.
Crowd-Pleasing: A guaranteed hit with both kids and adults. It’s always a win when a single dish can satisfy everyone at the table. This recipe strikes the perfect balance of flavor and comfort, making it a universal favorite.
Ingredients in Mashed Potato Casserole
You don’t need much to make magic just a few simple ingredients that shine when baked together:
Mashed Potatoes: The base of it all. Soft, creamy, and ready to soak up all those delicious flavors.
Cheddar Cheese: Melts into golden, gooey perfection both mixed in and sprinkled on top.
Sour Cream: Adds tang and extra creaminess.
Butter: For that rich, melt-in-your-mouth texture.
Crispy Bacon: A salty, crunchy surprise in every bite.
Green Onions: Freshness and a bit of mild zing to balance the richness.
Eggs: Help bind everything together for a light, fluffy texture.
Salt and Pepper: Season to taste and bring everything together.

Instructions
Let’s dive into the steps to create this flavorful masterpiece:
Preheat Your Equipment: Preheat your oven to 375°F. This sets the stage for a golden, bubbly bake.
Combine Ingredients: In a large bowl, mix together mashed potatoes, sour cream, butter, beaten eggs, cheese, and most of the bacon. Stir until smooth and creamy you want a well-blended mixture that’s rich and fluffy.
Prepare Your Cooking Vessel: Lightly grease your casserole dish to prevent sticking and make cleanup a breeze.
Assemble the Dish: Spoon the potato mixture into your prepared dish and spread it out evenly. Top with remaining cheese and bacon for extra crunch and flavor.
Cook to Perfection: Bake uncovered for 30–35 minutes, or until the top is golden and the center is heated through.
Finishing Touches: Let the casserole rest for 5 minutes before serving to let all the textures settle and flavors meld.
Serve and Enjoy: Sprinkle with chopped green onions, and serve it up warm and cozy. It’s everything you love about mashed potatoes, elevated to casserole status.
Nutrition Facts
Servings: 6
Calories per serving: Around 350–450 (depending on toppings and cheese)
(Note: These values are approximate and depend on your exact ingredients.)
Preparation Time
Prep Time: 15 minutes
Cook Time: 35 minutes
Total Time: 50 minutes
How to Serve Mashed Potato Casserole
This dish pairs wonderfully with various sides and accompaniments. Here are a few serving suggestions to enhance your dining experience:
Serve alongside roasted chicken, grilled sausages, or even a hearty beef stew.
Pair with a crisp green salad for contrast and balance.
Add a dollop of gravy or a drizzle of hot sauce for an extra punch.
Make it part of a holiday feast with turkey, stuffing, and cranberry sauce.
Cut into squares and serve as a potluck favorite or brunch star!
Additional Tips
Here are some extra tips to help you get the most out of this recipe:
– Use leftover mashed potatoes for extra efficiency.
– Add roasted garlic or caramelized onions for an extra flavor boost.
– Try a mix of cheeses like mozzarella, Monterey Jack, or Gruyère.
– Make it vegetarian by skipping the bacon or using meatless crumbles.
– Want a crispy top? Sprinkle with breadcrumbs before baking.
– You can prepare it a day ahead and bake right before serving.
– Add chopped cooked veggies like broccoli or spinach for a nutritious twist.
– Use Greek yogurt instead of sour cream for a protein boost.
– Garnish with fresh herbs like parsley or thyme for a vibrant finish.
– Store leftovers in an airtight container and reheat in the oven for best results.
FAQ’s
- Can I use instant mashed potatoes?
Yes, just prepare them according to package instructions before adding other ingredients. - Can this be made ahead of time?
Absolutely! Assemble it the night before, cover, and refrigerate. Just bake when you’re ready. - How do I reheat leftovers?
Reheat in the oven at 350°F until warmed through, or microwave individual portions. - Can I freeze mashed potato casserole?
Yes! Freeze before or after baking just wrap tightly and reheat in the oven. - Can I leave out the eggs?
You can, but they help with structure. If omitting, the casserole may be slightly softer. - What other cheeses can I use?
Feel free to experiment try Colby Jack, mozzarella, or even blue cheese for bold flavor. - Is this gluten-free?
Yes, as long as all your ingredients (like bacon and cheese) are gluten-free. - Can I make it spicy?
Absolutely! Add chopped jalapeños, a pinch of cayenne, or hot sauce for heat. - How do I make it more filling?
Stir in cooked ground beef or shredded chicken for a protein-packed casserole. - Can I serve it as a main dish?
Definitely! It’s hearty enough on its own, especially with added mix-ins like veggies or meat.
CONCLUSION
Mashed Potato Casserole is one of those magical dishes that feels like a warm hug on a plate. It’s cozy, comforting, and completely customizable to whatever your taste buds are craving. Whether you’re serving it at a festive gathering or sneaking leftovers for lunch the next day (no judgment here!), it always delivers. So go ahead whip it up, dig in, and savor every delicious bite.
Print
Mashed Potato Casserole
- Prep Time: 20 minutes
- Cook Time: 25 minutes
- Total Time: 45 minutes
- Yield: 6–8 servings 1x
- Category: Side Dish
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Description
Mashed Potato Casserole is the ultimate comfort side dish, combining creamy mashed potatoes with cheese, sour cream, and crispy toppings. Perfect for holiday dinners or weeknight meals, it’s warm, hearty, and irresistibly cheesy.
Ingredients
- 3 lbs potatoes, peeled and cubed
- 1/2 cup sour cream
- 1/4 cup butter
- 1/2 cup milk (more if needed)
- 1 1/2 cups shredded cheddar cheese, divided
- 1/4 cup chopped green onions (optional)
- Salt and pepper to taste
- 1/2 cup cooked and crumbled bacon (optional)
- 1/2 cup breadcrumbs or crushed Ritz crackers (optional topping)
- 1 tablespoon melted butter (for topping)
Instructions
- Preheat oven to 375°F (190°C). Grease a 9×13-inch baking dish.
- Boil potatoes in salted water for 15–20 minutes until fork-tender. Drain well.
- Mash the potatoes with butter, sour cream, and milk until smooth. Add more milk if needed for creaminess.
- Stir in 1 cup cheddar cheese, salt, pepper, and green onions if using.
- Spoon the mashed potato mixture into the prepared baking dish and spread evenly.
- Top with the remaining 1/2 cup cheese and bacon if using.
- In a small bowl, mix breadcrumbs or crushed crackers with melted butter, then sprinkle over the top.
- Bake for 20–25 minutes until golden and bubbly. Let rest a few minutes before serving.
Notes
- Make ahead and refrigerate—just add 10 extra minutes to baking time.
- Use cream cheese instead of sour cream for a richer taste.
- For a vegetarian version, omit the bacon and use a crunchy breadcrumb topping.
Nutrition
- Serving Size: 1 cup
- Calories: 320
- Sugar: 2 g
- Sodium: 420 mg
- Fat: 18 g
- Saturated Fat: 10 g
- Unsaturated Fat: 6 g
- Trans Fat: 0 g
- Carbohydrates: 30 g
- Fiber: 2 g
- Protein: 9 g
- Cholesterol: 45 mg
Keywords: mashed potato casserole, cheesy mashed potatoes, potato side dish, comfort food, holiday sides