I still remember the first time I pulled this bubbling casserole out of the oven and watched everyone reach for seconds. Loaded Baked Potato Casserole takes everything you love about a classic loaded baked potato and turns it into a shareable, hands-off dish you can bring to a family dinner, potluck, or easy weeknight supper. It’s creamy, cheesy, and has crisp-tender edges that make it feel special without any fuss. If you like hearty sides that satisfy a crowd, this hits the spot and pairs nicely with other comfort classics like our crispy oven-baked sweet potato fries.

Why you’ll love this dish

This casserole is an honest crowd-pleaser. It’s budget-friendly, feeds a group, and transforms plain potatoes into something indulgent yet familiar. The recipe is flexible, so you can scale it up for company or halve it for two. It’s also kid-approved and makes a comforting main or substantial side—perfect for a relaxed dinner, a brunch spread, or a weekend gathering when you want one dish to do a lot of work.

Step-by-step overview

You’ll start by baking whole russet potatoes until tender, then cool, peel, and cube them so they hold their texture in the casserole. The cubes get folded with sour cream, milk, butter, half the cheese, scallions, and crumbled cooked slices. The mixture goes into a greased dish, gets a blanket of extra cheese, and returns to the oven until bubbly and golden. Finish with fresh green onions for color and brightness.

What you’ll need

• 4 large russet potatoes
• 1 cup sour cream (or full-fat Greek yogurt as a swap)
• 1 cup shredded cheddar cheese, divided (use sharp for more tang)
• 1/2 cup chopped green onions, divided
• 6 slices cooked, crumbled smoked breakfast meat (see notes below)
• Salt and freshly ground black pepper to taste
• 1/2 cup milk (any fat level or plant milk)
• 1/4 cup butter, melted or softened

Notes on ingredients and substitutions: russets give the best fluffy interior and crisp edges; Yukon Golds will be creamier. If you want a vegetarian option, replace the crumbled smoked slices with seasoned and sautéed mushrooms or smoked tempeh. Use low-sodium cheese or reduce added salt if you’re watching sodium.

Step-by-step instructions

1. Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish or similar size.
2. Place whole russet potatoes on a baking sheet and bake until tender, about 1 hour depending on size. A fork should slip in easily. Let the potatoes cool enough to handle.
3. Once cooled, peel the potatoes and cut them into roughly 1-inch cubes.
4. In a large bowl combine the cubed potatoes, sour cream, milk, butter, half of the shredded cheddar, half of the chopped green onions, the crumbled cooked slices, and salt and pepper. Fold gently so the potato cubes stay intact.
5. Transfer this mixture into the prepared baking dish and spread it evenly.
6. Sprinkle the remaining cheddar cheese on top.
7. Bake for 25 to 30 minutes, until the cheese is melted and the top is bubbly and golden. Remove from the oven and let rest for a few minutes. Garnish with the remaining green onions before serving.

Best ways to enjoy it

This casserole shines as a main or side. Serve it alongside a crisp green salad for contrast, roasted vegetables for a heartier plate, or a simple roast chicken for an easy family meal. For a playful, handheld option at casual gatherings, spoon warm casserole into tortillas or bowls a la a loaded potato taco bowl style serving. A squeeze of lemon or a spoon of pickled relish on the side adds a pleasing acid cut.

Storage and reheating tips

Store leftovers in an airtight container in the refrigerator for up to 3 to 4 days. Reheat gently in a 350°F oven covered with foil until warmed through to preserve moisture, or microwave single portions until hot. To freeze, cool completely and transfer to a freezer-safe container for up to 3 months; thaw overnight in the refrigerator before reheating. Always discard food left at room temperature longer than two hours to stay safe.

Helpful cooking tips

• Bake potatoes evenly by choosing similar sizes so they cook through at the same time.
• Let baked potatoes cool slightly before peeling to avoid burning and to make peeling easier.
• Fold the mixture gently to keep some potato texture; overmashing makes the casserole dense.
• If you like a crunchy top, broil for 1 to 2 minutes at the end, watching closely to prevent burning.
• For richer flavor, use sharp cheddar and real butter. For lighter versions, swap sour cream for plain Greek yogurt and use reduced-fat milk.

Recipe variations

• Make it smoky and slightly sweet by stirring in roasted corn and a pinch of smoked paprika.
• Add green vegetables like steamed broccoli or chopped spinach to boost color and nutrients.
• Swap the cheddar for a melty cheese blend such as Monterey Jack or Gruyère for a creamier finish.
• For a spicier kick, fold in diced jalapeños or a dash of chipotle powder.

Common questions

Can I make this ahead of time?

Yes. Assemble the casserole and keep it covered in the refrigerator for up to 24 hours before baking. You may need to add a few extra minutes to the bake time if it goes into the oven chilled.

Can I speed up the potato step by using the microwave?

Absolutely. You can microwave the whole russets until tender, about 8 to 12 minutes depending on size, turning once. Let them cool slightly before peeling and cubing.

Is it okay to freeze the cooked casserole?

Yes. Cool completely, then freeze in airtight containers for up to 3 months. Thaw overnight in the refrigerator before reheating in the oven until heated through.

How can I make this vegetarian?

Replace the crumbled cooked slices with sautéed mushrooms, caramelized onions, or smoked tempeh. Use a plant-based butter and dairy-free cheese if you want a fully plant-based dish.

Loaded Baked Potato Casserole

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A creamy and cheesy casserole that turns classic loaded baked potatoes into a shareable dish, perfect for family dinners or potlucks.

• Prep Time: 15 minutes
• Cook Time: 60 minutes
• Total Time: 75 minutes
• Yield: 6 servings 1x
• Category: Main Course
• Method: Baking
• Cuisine: American
• Diet: Vegetarian

Ingredients

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• 4 large russet potatoes
• 1 cup sour cream (or full-fat Greek yogurt as a swap)
• 1 cup shredded cheddar cheese, divided
• 1/2 cup chopped green onions, divided
• 6 slices cooked, crumbled smoked breakfast meat
• Salt and freshly ground black pepper to taste
• 1/2 cup milk (any fat level or plant milk)
• 1/4 cup butter, melted or softened

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Instructions

1. Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish or similar size.
2. Place whole russet potatoes on a baking sheet and bake until tender, about 1 hour depending on size.
3. Let the potatoes cool enough to handle.
4. Once cooled, peel the potatoes and cut them into roughly 1-inch cubes.
5. In a large bowl combine the cubed potatoes, sour cream, milk, butter, half of the shredded cheddar, half of the chopped green onions, the crumbled cooked slices, and salt and pepper. Fold gently.
6. Transfer this mixture into the prepared baking dish and spread it evenly.
7. Sprinkle the remaining cheddar cheese on top.
8. Bake for 25 to 30 minutes, until the cheese is melted and the top is bubbly and golden.
9. Remove from the oven and let rest for a few minutes. Garnish with the remaining green onions before serving.

Notes

For a vegetarian version, replace the smoked meat with sautéed mushrooms or smoked tempeh.

Nutrition

• Serving Size: 1 serving
• Calories: 440
• Sugar: 3g
• Sodium: 600mg
• Fat: 20g
• Saturated Fat: 10g
• Unsaturated Fat: 8g
• Trans Fat: 0g
• Carbohydrates: 54g
• Fiber: 5g
• Protein: 12g
• Cholesterol: 50mg