Slow Cooker Potato and Onion Bake Recipe for a Delicious Dinner in Just 4 Steps
There are some recipes that never go out of style, and this Slow Cooker Potato and Onion Bake is one of them.
It takes everyday ingredients you probably already have in your kitchen and turns them into a rich, creamy side dish that’s perfect for almost any meal.
As the potatoes cook low and slow, they become buttery soft, while the onions mellow into a sweet, melt-in-your-mouth layer that blends beautifully with the creamy sauce and melted cheddar.
One of the best things about this Slow Cooker Potato and Onion Bake is how little effort it takes. After a few minutes of prep, the slow cooker does the rest, making it ideal for busy weeknights, holiday gatherings, potlucks, or Sunday dinners with the family. It’s the kind of comforting casserole everyone goes back for seconds of.
Serve it alongside roast chicken, grilled steak, pork chops, baked ham, or even enjoy it as a hearty vegetarian meal on its own.
Ingredients
Serves: 6 to 8
You’ll Need:
2½ pounds Yukon Gold or Russet potatoes, peeled and sliced thin
1 large sweet onion, sliced thin
2 cups shredded cheddar cheese
1 (10.5-ounce) can condensed cream of chicken soup
½ cup sour cream
½ cup milk
2 tablespoons butter, melted
1 teaspoon garlic powder
1 teaspoon onion powder
1 teaspoon dried parsley
½ teaspoon paprika
½ teaspoon black pepper
½ teaspoon salt, or to taste
How to Make Slow Cooker Potato and Onion Bake
Step 1: Prepare the Slow Cooker
Lightly coat a 6-quart slow cooker with butter or nonstick cooking spray to prevent sticking and make cleanup easier.
Step 2: Mix the Creamy Sauce
In a medium mixing bowl, whisk together:
Cream of chicken soup
Sour cream
Milk
Melted butter
Garlic powder
Onion powder
Paprika
Dried parsley
Salt
Black pepper
Whisk until the mixture is smooth and fully combined.
Step 3: Build the Layers
Arrange one-third of the sliced potatoes across the bottom of the slow cooker.
Add one-third of the sliced onions over the potatoes.
Spoon one-third of the creamy sauce over the vegetables, spreading it evenly.
Finish the layer with one-third of the shredded cheddar cheese.
Repeat these layers two more times until all the ingredients have been used. Sprinkle the remaining cheese over the top for a perfectly golden, cheesy finish.
Step 4: Cook
Cover with the lid and cook until the potatoes are fork tender.
Cook on:
LOW: 6 to 7 hours
or
HIGH: 3 to 4 hours
The potatoes should be soft all the way through before serving.
Step 5: Let It Rest
Turn off the slow cooker and let the casserole sit for 10 to 15 minutes.
Giving it a few minutes to rest allows the sauce to thicken slightly, making it easier to serve while creating an even creamier texture.
If you’re looking for an easy side dish that tastes like it took far more effort than it actually did, this Slow Cooker Potato and Onion Bake is hard to beat.
Every bite is loaded with tender potatoes, sweet onions, creamy sauce, and plenty of melted cheddar. Whether you’re making it for a holiday table or a simple weeknight dinner, it’s one of those dependable recipes people will ask you to make again and again.
