Slow Cooker Onion Butter Potatoes are the perfect comfort-food side dish for busy days, family dinners, and holiday gatherings. Tender potatoes slowly cook in a rich buttery sauce with savory onion flavor, creating a dish that is creamy, hearty, and packed with delicious flavor. With minimal prep and simple ingredients, this recipe is a reliable favorite that pairs beautifully with chicken, beef, or grilled vegetables.

Why You’ll Love This Recipe

• Easy to prepare with only a few pantry staples
• The slow cooker does most of the work for you
• Rich buttery flavor with savory onion seasoning
• Perfect for holidays, potlucks, or weeknight dinners
• Soft, tender potatoes that practically melt in your mouth
• Great make-ahead side dish for busy schedules
• Family-friendly and comforting

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

• 2 pounds baby potatoes, halved
• 1 large yellow onion, thinly sliced
• 4 tablespoons unsalted butter, melted
• 2 tablespoons olive oil
• 1 packet onion soup mix
• 1 teaspoon garlic powder
• 1/2 teaspoon black pepper
• 1/2 teaspoon dried parsley
• 1/4 teaspoon paprika
• 1/4 teaspoon salt
• Fresh parsley for garnish

Directions

1. Wash and dry the baby potatoes thoroughly. Cut larger potatoes into quarters so they cook evenly.
2. Lightly grease the inside of the slow cooker with cooking spray or a small amount of butter.
3. Add the potatoes and sliced onions to the slow cooker.
4. In a medium bowl, whisk together the melted butter, olive oil, onion soup mix, garlic powder, black pepper, parsley, paprika, and salt.
5. Pour the butter mixture over the potatoes and onions. Toss gently until everything is evenly coated.
6. Cover the slow cooker with the lid and cook on LOW for 5 to 6 hours or on HIGH for 3 to 4 hours, until the potatoes are fork tender.
7. Stir once or twice during cooking if possible to evenly distribute the seasoning and butter sauce.
8. Once fully cooked, sprinkle fresh parsley on top before serving.
9. Serve warm as a side dish with roasted chicken, grilled steak, baked fish, or vegetables.

Servings and timing

• Servings: 6 servings
• Prep Time: 10 minutes
• Cook Time: 5 to 6 hours on LOW or 3 to 4 hours on HIGH
• Total Time: About 5 hours 10 minutes

Variations

• Add shredded cheddar cheese during the final 15 minutes of cooking for a cheesy version.
• Stir in sliced mushrooms for extra savory flavor.
• Use red potatoes or Yukon Gold potatoes instead of baby potatoes.
• Add chopped fresh rosemary or thyme for an herby twist.
• Sprinkle grated parmesan cheese over the potatoes before serving.
• For a little heat, add a pinch of crushed red pepper flakes.
• Mix in sliced bell peppers for extra color and sweetness.

Storage/Reheating

Store leftover potatoes in an airtight container in the refrigerator for up to 4 days.

To reheat, place the potatoes in a microwave-safe dish and heat in 30-second intervals until warmed through. You can also reheat them in a skillet over medium heat with a small amount of butter to refresh the flavor.

For larger portions, reheat in the oven at 350°F (175°C) for about 15 minutes.

Freezing is possible, although the potatoes may become softer after thawing. Store frozen potatoes in a freezer-safe container for up to 2 months.

FAQs

Can I use russet potatoes instead of baby potatoes?

Yes, russet potatoes work well. Simply peel and cut them into evenly sized chunks before cooking.

Do I need to peel the potatoes?

No, the potato skins become tender during cooking and add extra texture and flavor.

Can I make this recipe ahead of time?

Yes, you can prepare the ingredients the night before and refrigerate them until ready to cook.

What type of onion works best?

Yellow onions are ideal because they become sweet and tender during slow cooking.

Can I add cheese to this recipe?

Absolutely. Cheddar or parmesan cheese tastes delicious with these potatoes.

Why are my potatoes still firm?

This usually happens if the potato pieces are too large or the slow cooker lid was opened too often during cooking.

Can I cook this recipe overnight?

Yes, cooking on the LOW setting overnight works well for very tender potatoes.

What can I serve with onion butter potatoes?

They pair well with roasted chicken, grilled beef, baked fish, or vegetable dishes.

Can I use homemade onion seasoning?

Yes, homemade onion seasoning can replace the packet mix if preferred.

How do I keep the potatoes from sticking?

Greasing the slow cooker before adding the ingredients helps prevent sticking.

Conclusion

Slow Cooker Onion Butter Potatoes are a simple yet flavorful side dish that fits almost any meal. The rich buttery coating, savory onion flavor, and perfectly tender potatoes make this recipe a comforting favorite for both casual dinners and special occasions. With easy preparation and endless variation options, this slow cooker recipe is one you’ll want to make again and again.

Print