Indulge in Comfort: Slow Cooker Potato Casserole Recipe

Fact Checked By: Macaria Valerie

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When it comes to comfort food, few dishes can rival the creamy, cheesy goodness of a potato casserole. This slow cooker potato casserole recipe takes that comfort to the next level by combining convenience and exceptional flavor. Whether you’re preparing a family dinner, feeding a crowd at a gathering, or simply craving a hearty side dish, this recipe has you covered.

In this article, we’ll guide you through the steps to create this mouthwatering potato casserole using your trusty slow cooker. You’ll discover why this recipe is not only delicious but also a practical addition to your culinary repertoire. Get ready to savor every bite of creamy, cheesy, and perfectly cooked potatoes as we take you on a culinary journey of comfort and satisfaction.

Slow Cooker Potato Casserole Recipe

potato casserole recipe

Here’s a simple and delicious slow cooker potato casserole recipe that’s perfect for a hearty and comforting meal:


  • 4 cups of diced potatoes (about 4-5 medium-sized potatoes)
  • 1 small onion, finely chopped
  • 2 cups shredded cheddar cheese
  • 1 cup sour cream
  • 1 can (10.75 oz) condensed cream of mushroom soup
  • 1/4 cup unsalted butter, melted
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon onion powder
  • Salt and pepper to taste
  • Optional toppings: chopped fresh chives or cooked and crumbled bacon


  • Prepare the Slow Cooker: Grease the inside of your slow cooker with cooking spray or a small amount of butter to prevent sticking.
  • Layer the Potatoes: Place half of the diced potatoes in an even layer at the bottom of the slow cooker.
  • Add Onions and Cheese: Sprinkle half of the finely chopped onions and half of the shredded cheddar cheese over the potatoes.
  • Repeat Layers: Repeat the layers with the remaining potatoes, onions, and cheese.
  • Prepare the Sauce: In a separate bowl, mix together the sour cream, condensed cream of mushroom soup, melted butter, garlic powder, onion powder, salt, and pepper. Stir until well combined.
  • Pour Sauce Over Potatoes: Pour the sauce mixture evenly over the layered potatoes, onions, and cheese.
  • Cook on Low: Cover the slow cooker with its lid and cook on the low setting for about 4-5 hours or until the potatoes are tender when pierced with a fork. Cooking times may vary depending on your slow cooker.
  • Serve: Once the slow cooker potato casserole is done, you can sprinkle it with fresh chives or cooked and crumbled bacon for extra flavor and garnish. Serve hot and enjoy!

This slow cooker potato casserole is a crowd-pleaser and makes for a fantastic side dish for gatherings or a comforting meal at home. Feel free to customize it by adding your favorite seasonings or extra toppings to suit your taste.

Expert Tips

Creating a delicious slow cooker potato casserole is easy with the right techniques and these expert tips:

  • Choose the Right Potatoes: Opt for starchy potatoes like russet or Yukon Gold, as they provide a creamy texture when cooked. Avoid waxy potatoes, like red potatoes, which tend to hold their shape and won’t mash as smoothly.
  • Uniform Potato Slices: Ensure that you slice or dice the potatoes into uniform pieces. This helps them cook evenly, preventing some pieces from becoming overly soft while others remain undercooked.
  • Grease the Slow Cooker: To prevent sticking and make cleanup easier, grease the interior of your slow cooker with cooking spray or a thin layer of butter before adding the ingredients.
  • Layer Ingredients Evenly: When layering the potatoes, onions, and cheese, aim for even distribution to ensure consistent flavors throughout the casserole.
  • Condensed Soup Options: While this recipe uses cream of mushroom soup, you can also experiment with other condensed soups like cream of chicken, cream of celery, or cheese soup to vary the flavor.
  • Fresh Herbs: Consider adding fresh herbs like chopped chives, parsley, or thyme to the casserole for extra freshness and flavor. Sprinkle them on top before serving.
  • Don’t Overcook: Be cautious not to overcook the casserole. Once the potatoes are fork-tender, it’s ready. Overcooking can cause the potatoes to become mushy.
  • Bacon Bits: If you prefer a smoky flavor and a bit of crunch, top the casserole with cooked and crumbled bacon bits before serving.
  • Cheese Variations: Experiment with different types of cheese for unique flavors. Sharp cheddar, Swiss, or Monterey Jack can all be excellent choices.
  • Make It a Meal: Turn this side dish into a complete meal by adding cooked diced ham or cooked ground sausage. Mix it in with the other ingredients for added protein.
  • Serve with Condiments: Offer condiments like sour cream, hot sauce, or ketchup on the side for those who enjoy extra toppings.
  • Leftovers: Leftovers can be refrigerated and reheated for another meal. They can also be used as a delicious breakfast base by adding fried or poached eggs on top.

With these expert tips, you’ll create a slow cooker potato casserole that’s not only convenient but also bursting with flavor and perfect for any occasion. Enjoy the creamy, cheesy goodness of this comforting dish!

Why This Recipe Is Just So Good…

This slow cooker potato casserole recipe is exceptionally good for several reasons:

  • Convenience: It’s incredibly convenient to prepare. You can assemble the ingredients quickly, set your slow cooker, and let it do the work while you attend to other tasks.
  • Creamy Texture: The combination of sour cream and condensed soup creates a lusciously creamy texture that coats every potato bite, making it irresistibly comforting.
  • Flavorful Layers: The layering of potatoes, onions, and cheese ensures that each bite is packed with flavor. The cheese melts and melds with the potatoes and onions, creating a harmonious taste sensation.
  • Customizable: This recipe is highly customizable. You can adjust the seasonings, cheese varieties, and even add ingredients like bacon or herbs to tailor it to your taste preferences.
  • Perfectly Cooked Potatoes: The slow cooker gently cooks the potatoes, allowing them to become tender and perfectly cooked without the risk of overcooking or burning.
  • Versatile Side Dish: This potato casserole is a versatile side dish that pairs well with a wide range of main courses. It’s perfect for family dinners, potlucks, and holiday gatherings.
  • Great for Feeding a Crowd: It can easily be scaled up to feed a larger group, making it an excellent choice for parties and gatherings.
  • Make-Ahead Option: You can prepare this casserole in advance, refrigerate it, and then cook it in the slow cooker when you’re ready. This is a time-saving option for busy days or special occasions.
  • Warm Comfort Food: The warm, cheesy, and creamy nature of this dish makes it the ultimate comfort food that’s both soothing and satisfying.
  • Leftovers are Delicious: If you have leftovers, they taste just as good (if not better) the next day. Reheat them for a quick and delicious meal.

In summary, this slow cooker potato casserole recipe offers both convenience and exceptional taste. It’s the perfect blend of creamy, cheesy, and flavorful, making it a crowd-pleaser that’s bound to become a favorite comfort food in your recipe repertoire.

Storage Instructions

If you have leftover slow cooker potato casserole and want to store it for later enjoyment, follow these storage instructions to maintain its quality:


  • Cool Down: Allow the casserole to cool down to room temperature after cooking. Hot food can raise the temperature inside your refrigerator, affecting other items.
  • Portion into Containers: Divide the leftover casserole into portions that you’re likely to use in one sitting. This helps minimize the need for reheating large quantities.
  • Airtight Containers: Transfer each portion into a separate airtight container. Make sure the containers have tight-fitting lids to prevent air from entering.
  • Label and Date: Label each container with the date of preparation. This helps you keep track of freshness.
  • Refrigerate: Place the sealed containers in the refrigerator. Store them on a shelf, not in the refrigerator door, as temperatures are more consistent on shelves.


  • When you’re ready to enjoy the leftover potato casserole:
  • Remove the desired portion from the refrigerator.
  • Reheat in a microwave-safe dish or oven until thoroughly heated. Use a microwave for quicker reheating or an oven for a crisper top layer.
  • If the casserole becomes too dry during reheating, you can add a small amount of milk or chicken broth to restore moisture.
  • Stir the casserole occasionally to ensure even heating.
  • Once fully heated, serve and enjoy!

Proper refrigeration and reheating will help maintain the quality and safety of your leftover slow cooker potato casserole. Enjoy the convenience of having a delicious meal ready to enjoy, even on busy days.

Frequently Asked Questions (FAQ)

Here are some expert-level questions and answers on making a slow cooker potato casserole:

Q: What type of potatoes are best for a slow cooker potato casserole?

A: Starchy potatoes like Russets or Yukon Golds are ideal for a casserole in a slow cooker. They hold their shape well and absorb flavors nicely, making them perfect for a creamy and hearty casserole.

Q: Can I slice the potatoes ahead of time, and how do I prevent them from browning?

A: Yes, you can slice the potatoes ahead of time. To prevent browning, place the sliced potatoes in a bowl of cold water with a little bit of lemon juice or vinegar until you’re ready to use them. Just be sure to drain and pat them dry before adding to the casserole.

Q: What’s the best way to layer ingredients in a slow cooker for a potato casserole?

A: Start with a layer of sliced potatoes at the bottom, then add your layers of seasoning, cheese, onions, or any other ingredients you’re using. Repeat these layers until all ingredients are used, finishing with a layer of cheese on top.

Q: How can I ensure that my slow cooker potato casserole doesn’t become too watery?

A: To prevent a watery casserole, avoid adding too much liquid. The potatoes and other ingredients will release moisture as they cook. You can also layer the bottom of the slow cooker with onions or bell peppers to absorb excess moisture.

Q: Is it necessary to grease the slow cooker before adding the casserole ingredients?

A: Yes, it’s a good practice to lightly grease the inside of the slow cooker with butter or cooking spray to prevent sticking and make cleanup easier.

Q: Can I add meat to the potato casserole? If so, should it be cooked first?

A: You can certainly add meat like ground beef, bacon, or ham to the casserole. It’s advisable to cook ground meats before adding them to ensure they are fully cooked and to remove excess fat.

Q: How long should I cook a potato casserole in a slow cooker?

A: A potato casserole typically takes about 4-5 hours on high or 7-8 hours on low in a slow cooker. However, cooking times can vary based on the model of your slow cooker and the thickness of your potato slices.

Q: Can I add cream or milk to the casserole, and when should I add it?

A: You can add dairy like cream, milk, or sour cream for richness. Add it towards the end of the cooking time to prevent curdling or separation.

Q: What toppings work well for a slow cooker potato casserole?

A: After cooking, toppings like chopped fresh herbs, extra cheese, crispy bacon bits, or green onions can add flavor and texture to the casserole.

Q: How can I store and reheat leftovers?

A: Leftover potato casserole can be stored in an airtight container in the refrigerator and reheated in the microwave or oven. It usually keeps well for 3-4 days.

These expert insights can help you create a delicious and perfectly cooked slow cooker potato casserole, ideal for a comforting meal or a crowd-pleasing side dish.


In conclusion, this slow cooker potato casserole recipe offers a winning combination of convenience and irresistible flavor. It’s a dish that brings comfort to your table and leaves your taste buds thoroughly satisfied. With its creamy texture, layers of flavor, and customizable options, it’s a versatile side dish that’s perfect for family dinners, potlucks, and special occasions.

Whether you’re a busy home cook looking for a convenient meal option or a food enthusiast seeking that ultimate comfort food experience, this slow cooker potato casserole delivers on all fronts. Make it once, and it’s bound to become a staple in your recipe repertoire, loved by both you and those you share it with.

So, gather your ingredients, set up your slow cooker, and indulge in the creamy, cheesy goodness of this potato casserole. With every bite, you’ll be reminded of the joy that comfort food brings to our lives, making mealtime moments even more special.

Photo of author

Macaria Valerie

About the author

With over 15 years of experience in the culinary world, Macaria Valerie has developed a unique niche expertise in the art and science of rice cooking. Born in Taipei and raised in San Francisco, Macaria's passion for perfectly cooked rice is a blend of her Taiwanese roots and modern culinary techniques. She has traveled across Asia, gathering traditional rice recipes and cooking methodologies. Macaria is not just about plain rice. She's explored the depths of risotto in Italy, paella in Spain, biryani in India, and sushi in Japan. Yet, she believes that the core of these dishes lies in mastering the basic foundation - the rice. In her popular blog, "Expert Reviews Best Rice Cooker", Macaria shares not only her favorite rice recipes but also reviews the latest in rice cooker technology. She's been a consultant for major kitchen appliance brands, aiding in the development and testing of their rice cooker lines. In her spare time, Macaria conducts workshops and classes, ensuring that the art of cooking perfect rice is accessible to everyone. Whether you're aiming for a simple bowl of fluffy white rice or venturing into the intricate world of flavored rice dishes, Macaria Valerie is your go-to guide in the rice cooker niche.

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