This Loaded Baked Potato Casserole started out as one of my favorite Must-Goes creations. After making a ridiculous amount of Loaded Baked Potato Salad for a dinner party, I found myself with far more leftovers than anyone could reasonably eat.

By the second day, the thought of eating another plateful of cold potato salad was making my eye twitch. Since I absolutely hate wasting food, I decided to try something different. I transferred the leftover salad to a casserole dish, sprinkled a little extra cheese on top, and warmed it in the oven.

As it turned out, that little experiment was a delicious success!

My family loved the warm, creamy potatoes so much that it wasn’t long before I started making the casserole from scratch. I made a few adjustments, cooking the onions and bacon together before combining them with tender potatoes, cheddar cheese, sour cream, mayonnaise, and ranch seasoning.

After topping everything with extra cheese, bacon, and green onions, into the oven it goes until it’s hot, bubbly, and lightly golden. What comes out of the oven is all the goodness of a loaded baked potato packed into one creamy, cheesy casserole.

It’s an easy, satisfying side dish for family dinners, backyard barbecues, holiday gatherings, or any occasion that calls for a little comfort food. And with plenty of bacon and cheese, it’s hearty enough to enjoy as a meal all by itself.

I hope your family enjoys it as much as mine does.

Seconds, please!

Why You’ll LOVE This Loaded Baked Potato Casserole

Loaded baked potato flavor. Tender potatoes, smoky bacon, cheddar cheese, sour cream, and ranch seasoning come together in one delicious casserole.
Creamy and cheesy. The combination of mayonnaise, sour cream, and melted cheddar creates a rich, satisfying texture.
Easy to prepare. Simple ingredients and straightforward steps make this a convenient side dish for family meals.
Perfect for making ahead. Assemble the casserole in advance and bake when you’re ready to serve.
Great for a crowd. This generous recipe is ideal for potlucks, holidays, and backyard barbecues.

What You’ll Need

Potatoes – The hearty base of the casserole. I prefer red potatoes because they hold their shape well. Russet or Idaho potatoes also work.
Bacon and onions – Adds smoky, savory flavors. Cooking the onions with the bacon gives the casserole an extra layer of richness.
Cheddar cheese – Adds creamy, cheesy flavor throughout the casserole and creates a delicious golden topping.
Sour cream and mayonnaise – Combine to give the potatoes their rich, creamy texture.
Green onions – Add a mild onion flavor and a fresh, colorful finishing touch.
Ranch seasoning and garlic powder – Bring together the familiar flavors of a loaded baked potato. I prefer Hidden Valley Ranch Seasoning Mix.
Vegetable oil, salt, and pepper – Help cook and season the ingredients.

Making Loaded Baked Potato Casserole
Ready to Bake Loaded Baked Potato Casserole

Recipe Tips

Choose the right potatoes. Red potatoes hold their shape especially well in this casserole, making them my first choice. Russet or Idaho potatoes work, too, but their softer texture can make the finished casserole creamier.

Cook the potatoes until just tender. You want them soft enough to pierce easily with a fork but not falling apart. Overcooked potatoes can become mushy when mixed with the other ingredients.

Make peeling easier. I often boil potatoes ahead of time and refrigerate them overnight. Once cooled, they’re easier to handle and peel. A serrated vegetable peeler is especially handy.

Leave the skins on if you like. Whether to peel potatoes is entirely up to you. I sometimes leave the skins on smaller red potatoes because they’re thin and tender. For Russets, I generally prefer peeling them.

Reserve the toppings. Save a little bacon, cheddar cheese, and green onion to sprinkle over the casserole before baking. It gives the finished dish a delicious, colorful topping.

Make it vegetarian. Omit the bacon for a meatless version. You may want to add a little extra seasoning to replace some of the smoky, savory flavor. Check the ranch seasoning ingredients if preparing the dish for strict vegetarians.

Don’t overmix. Gently fold the ingredients together so the potatoes maintain some of their shape instead of turning into mashed potatoes.

How to Serve Loaded Baked Potato Casserole

This casserole pairs beautifully with just about any grilled or roasted meat. It’s especially delicious alongside my Dry Rubbed Barbecue Country Style Pork Ribs or a juicy grilled steak.
For a backyard barbecue, serve it with Smoky Southern Baked Beans with Bacon, grilled chicken, hamburgers, or pulled pork.
It’s also a great addition to holiday dinners, family gatherings, and potlucks. Since it can be assembled ahead of time, you can spend less time in the kitchen when guests arrive.
If you’re serving a rich main dish, balance the meal with a simple garden salad, steamed broccoli, or roasted vegetables.
This casserole is hearty enough to stand on its own. Add a fresh green salad, and you’ve got a satisfying meal.
For a cold variation with many of the same flavors, try my Loaded Baked Potato Salad.

Food and Drink Pairing Recommendations at Zigeze

Drink Pairings

The creamy potatoes, cheddar cheese, smoky bacon, and ranch seasoning pair especially well with drinks that refresh the palate and balance the richness of the casserole. If you’re serving the casserole with barbecue ribs, pulled pork, or steak, consider choosing a drink that complements the main course as well.

Here are some of my favorites:

Stags' Leap Chardonnay — Louis Jadot Beaujolais Gamay Red Wine

FAQs

Absolutely! This is one of my favorite make-ahead side dishes. Prepare the casserole as directed, transfer it to the baking dish, cover tightly, and refrigerate for up to two days before baking. When you’re ready, bake until the casserole is hot throughout and bubbly. Allow additional baking time if the casserole goes into the oven cold.

Yes. Simply omit the bacon for a meatless version. The cheddar cheese, ranch seasoning, sour cream, and green onions still provide plenty of flavor. For a vegetarian version, verify that the cheese and ranch seasoning are suitable for vegetarians.

Definitely! Sharp cheddar provides a bold flavor, but mild cheddar, Monterey Jack, Colby Jack, or a combination of cheeses will work nicely. Freshly shredded cheese generally melts more smoothly than packaged shredded varieties.

Drain the potatoes thoroughly after boiling and allow them to cool before combining them with the creamy ingredients. Avoid overcooking the potatoes and bake the casserole uncovered so excess moisture can evaporate.

Transfer leftovers to an airtight container and refrigerate within two hours of cooking. They’ll keep for 3–4 days. Reheat individual servings in the microwave or warm larger portions in the oven until heated throughout.

You can freeze it; however, I generally don’t recommend it. Potatoes can become grainy after freezing, and the sour cream and mayonnaise may separate when thawed. For the best flavor and texture, prepare the casserole fresh or refrigerate it for a day or two before baking.

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Loaded Baked Potato Casserole

Recipe byAnnette (•‿•)

This Loaded Baked Potato Casserole combines tender potatoes, smoky bacon, cheddar cheese, sour cream, ranch seasoning, and green onions in one creamy, cheesy dish. Baked until bubbly and golden, it's a delicious side for family dinners, barbecues, potlucks, and holiday gatherings.

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Prep Time:20

Cook Time:1

Total Time:1 20

Course: Sides

Cuisine: American

Servings:

Calories: 687cal

Ingredients

1 tablespoon vegetable oil
1 large onion diced
1 pound bacon cut into ½-inch pieces, divided
5 pounds potatoes washed
2 cups cheddar cheese shredded, divided
1 cup sour cream
1 cup mayonnaise
2 bunches green onions chopped, divided
3 tablespoons ranch seasoning mix
1½ teaspoons garlic powder
Salt and pepper to taste
Nonstick cooking spray

Instructions

Place the potatoes in a large stock pot and cover with water. Bring to a boil over high heat, then reduce to medium and cook for approximately 10–15 minutes, or until fork-tender. Drain thoroughly, rinse briefly with cool water, and allow to cool. Peel the potatoes if desired and cut into 1-inch chunks. Set aside.
Preheat oven to 350°F.
In a medium nonstick skillet, heat the vegetable oil over medium heat. Add the diced onion and cook until tender and translucent. Reserve ¼ cup of the uncooked bacon pieces for the topping, then add the remaining bacon to the skillet. Continue cooking until the bacon is browned and crisp. Drain excess grease.
Transfer the onion and bacon mixture to a large mixing bowl. Add the cooked potatoes. Reserve ¼ cup of chopped green onions and ¼ cup of shredded cheddar cheese for the topping. Add the remaining cheese and green onions, sour cream, mayonnaise, ranch seasoning, garlic powder, salt, and pepper. Gently fold together until evenly combined.
Lightly coat a 9 x 13-inch baking dish with nonstick cooking spray. Transfer the potato mixture to the dish, spreading evenly. Sprinkle the reserved cheese, green onions, and bacon over the top.
Bake uncovered for approximately 45 minutes, or until the casserole is hot, bubbly, and lightly golden. Make sure the bacon topping is fully cooked.
Remove from the oven and garnish with additional green onions or a drizzle of sour cream, if desired.
Serve and enjoy!