Slow Cooker Onion Butter Potatoes
The Ultimate Easy, Buttery, Melt-in-Your-Mouth Side Dish
If you’re looking for a comforting, crowd-pleasing side dish that practically cooks itself, these Slow Cooker Onion Butter Potatoes are exactly what you need. Made with tender baby potatoes, rich melted butter, sweet caramelized onions, and simple seasonings, this recipe delivers big flavor with minimal effort.
Perfect for busy weeknights, holiday dinners, potlucks, or meal prep, this slow cooker potato recipe is one you’ll come back to again and again. The low, gentle heat allows the potatoes to soak up all the buttery goodness while the onions slowly soften and become naturally sweet and flavorful.
Why You’ll Love This Recipe
- Minimal prep time
- Budget-friendly ingredients
- Family-approved comfort food
- Perfect side dish for almost any main course
- Great for holidays and gatherings
- Hands-off cooking
Whether you’re serving roast chicken, grilled steak, meatloaf, or even a vegetarian main, these buttery onion potatoes fit beautifully on any table.
Ingredients
- 2 pounds (1 kg) baby potatoes (gold or red), washed
- 1 large yellow onion, thinly sliced
- 4 tablespoons unsalted butter, melted
- 2 tablespoons olive oil
- 3 cloves garlic, minced
- 1 teaspoon salt (adjust to taste)
- ½ teaspoon black pepper
- 1 teaspoon dried Italian seasoning (optional)
- 1 tablespoon fresh parsley, chopped (for garnish)
Step-by-Step Instructions
Step 1: Prepare the Potatoes
Wash and scrub the baby potatoes thoroughly. If they are larger in size, cut them in half to ensure even cooking. Keeping the skin on adds texture and nutrients.
Step 2: Make the Butter Mixture
In a large mixing bowl, combine:
- Melted butter
- Olive oil
- Minced garlic
- Salt
- Black pepper
- Italian seasoning
Whisk everything together until well combined.
Step 3: Coat the Potatoes
Add the potatoes to the bowl and toss until they are evenly coated with the butter mixture. Make sure every piece is well covered for maximum flavor.
Step 4: Layer in the Slow Cooker
Lightly grease your slow cooker.
Add half of the potatoes to the bottom.
Layer half of the sliced onions on top.
Repeat with the remaining potatoes and onions.
Step 5: Cook Low and Slow
Cover and cook:
- LOW for 6–7 hours
or - HIGH for 3–4 hours
The potatoes are done when they are fork-tender and infused with buttery onion flavor.
