Slow Cooker Potato and Onion Bake is the ultimate comfort-food side dish, combining tender layers of potatoes and sweet onions in a rich, creamy sauce. Cooking the potatoes low and slow allows them to absorb all the delicious flavors while developing a melt-in-your-mouth texture that pairs beautifully with roasted meats, grilled chicken, or holiday dinners. This recipe is perfect for busy days because the slow cooker does most of the work, freeing up valuable oven space for other dishes.
The combination of thinly sliced potatoes and onions creates a classic, hearty dish that feels both rustic and elegant. As the potatoes cook, they become wonderfully soft while the onions turn sweet and flavorful. A creamy mixture of cheese, butter, and seasonings brings everything together, creating a comforting casserole-style side that everyone will love.
Whether you’re preparing a family meal, a potluck contribution, or a holiday feast, this dish is a reliable crowd-pleaser. The leftovers reheat beautifully, making it a practical option for meal prep as well. With simple ingredients and minimal preparation, this Slow Cooker Potato and Onion Bake proves that delicious homemade comfort food doesn’t have to be complicated.
Prep Time: 15 minutes
Cook Time: 5–6 hours (Low) or 3–4 hours (High)
Total Time: 5 hours 15 minutes
Servings: 6–8
Ingredients
- 2 pounds Yukon Gold or russet potatoes, thinly sliced
- 2 large onions, thinly sliced
- 2 cups shredded cheddar cheese
- 1 cup heavy cream
- ¼ cup unsalted butter, melted
- 2 cloves garlic, minced
- 1 teaspoon salt
- ½ teaspoon black pepper
- ½ teaspoon paprika
- Nonstick cooking spray
Instructions
- Lightly coat the inside of the slow cooker with nonstick cooking spray.
- In a bowl, combine the heavy cream, melted butter, garlic, salt, pepper, and paprika.
- Layer one-third of the potatoes in the bottom of the slow cooker.
- Top with one-third of the onions and one-third of the cheese.
- Drizzle a portion of the cream mixture over the layer.
- Repeat the layers two more times, ending with the remaining cheese on top.
- Cover and cook on Low for 5–6 hours or on High for 3–4 hours, until the potatoes are fork-tender.
- Let the bake rest for 10 minutes before serving to allow the sauce to thicken.
- Serve warm and enjoy.
Tips
- Add cooked bacon pieces for extra flavor.
- Substitute Gruyère or Monterey Jack cheese for a different taste.
- Sprinkle fresh parsley or chives on top before serving.
- Store leftovers in an airtight container in the refrigerator for up to 4 days.