These Slow Cooker Onion Butter Potatoes are rich, buttery, and packed with savory onion flavor. With minimal prep and simple ingredients, this comforting side dish practically cooks itself and pairs perfectly with chicken, beef, pork, or holiday meals.
Recipe Overview
| Detail | Information |
|---|---|
| Prep Time | 10 minutes |
| Cook Time | 4–5 hours (High) or 6–7 hours (Low) |
| Total Time | 4 hours 10 minutes |
| Servings | 6 servings |
| Difficulty | Easy |
| Course | Side Dish |
| Cuisine | American |
| Calories | Approximately 240 per serving |
Ingredients
Main Ingredients
- 2 pounds baby potatoes, halved
- 1 packet (1 ounce) dry onion soup mix
- ½ cup unsalted butter, melted
Optional Add-Ins
- 2 cloves garlic, minced
- 1 teaspoon dried parsley
- ½ teaspoon black pepper
- ¼ cup grated Parmesan cheese
Garnish
- Fresh parsley, chopped
- Chopped green onions
Equipment Needed
- Slow cooker (4 to 6 quart)
- Mixing bowl
- Measuring cups and spoons
Instructions
Step 1: Prepare the Potatoes
Wash and dry the potatoes.
Cut larger potatoes in half to ensure even cooking.
Step 2: Mix the Seasoning
In a large bowl combine:
- Melted butter
- Dry onion soup mix
- Garlic (if using)
- Black pepper
Mix well.
Step 3: Coat the Potatoes
Add the potatoes to the bowl.
Toss until every potato is evenly coated with the onion butter mixture.
Step 4: Slow Cook
Transfer the potatoes to the slow cooker.
Cover and cook:
On High
- 4–5 hours
On Low
- 6–7 hours
Potatoes should be fork-tender when done.
Step 5: Finish and Serve
Gently stir the potatoes.
Sprinkle with:
- Fresh parsley
- Green onions
- Parmesan cheese (optional)
Serve warm.
Tips for Perfect Onion Butter Potatoes
Use Baby Potatoes
They hold their shape well and become perfectly creamy inside.
Don’t Add Extra Liquid
The butter and natural moisture from the potatoes are enough.
Stir Once if Possible
A quick stir halfway through helps distribute flavor evenly.
Use Real Butter
Real butter provides the richest flavor.
Flavor Variations
Cheesy Onion Potatoes
Add:
- 1 cup shredded cheddar cheese
during the last 20 minutes of cooking.
Ranch Onion Potatoes
Mix in:
- 1 tablespoon ranch seasoning
with the onion soup mix.
Garlic Parmesan Version
Add:
- 3 minced garlic cloves
- ½ cup grated Parmesan cheese
Bacon Lover’s Potatoes
Top with:
- Crispy crumbled bacon
before serving.
Herb Butter Potatoes
Add:
- 1 teaspoon dried thyme
- 1 teaspoon rosemary
for extra flavor.
What to Serve With
Main Dishes
- Roast chicken
- Pork chops
- Meatloaf
- Pot roast
- Grilled steak
Holiday Favorites
- Turkey
- Ham
- Prime rib
Storage Instructions
Refrigerator
Store leftovers in an airtight container for up to 4 days.
Freezer
Freeze for up to 2 months.
Thaw overnight before reheating.
Reheating
Microwave
Heat in 30-second intervals until warm.
Oven
Bake at 350°F (175°C) for 10–15 minutes.
Nutrition Information
Per Serving (Approximate)
| Nutrient | Amount |
|---|---|
| Calories | 240 |
| Protein | 3g |
| Carbohydrates | 28g |
| Fat | 14g |
| Fiber | 3g |
| Sugar | 1g |
Frequently Asked Questions
Can I use russet potatoes?
Yes, but waxy potatoes like baby Yukon Gold or red potatoes hold their shape better.
Do I need to peel the potatoes?
No. The skins add texture and nutrients.
Can I make these ahead of time?
Yes. Reheat gently before serving.
Can I add vegetables?
Absolutely! Carrots and green beans work well.
Can I double the recipe?
Yes, as long as your slow cooker is large enough.
Recipe Notes
✅ Only a few simple ingredients.
✅ Perfect holiday side dish.
✅ Family-friendly recipe.
✅ Minimal prep required.
✅ Rich buttery onion flavor.
Make-Ahead Tip
Prep the potatoes and seasoning mixture the night before and refrigerate. Add everything to the slow cooker the next day.
Serving Suggestion
Serve alongside roast beef, grilled chicken, or holiday ham for a comforting and satisfying meal. 🥔🧈✨
Chef’s Secret
For extra golden potatoes, transfer the cooked potatoes to a baking sheet and broil for 3–5 minutes before serving. This creates crispy edges while keeping the centers soft and buttery. 😋🥔🧈✨
FAQs
Can I use red potatoes?
Yes! Red potatoes are excellent because they stay firm and creamy after slow cooking.
Why are my potatoes mushy?
They may have cooked too long. Check for doneness near the end of the recommended cooking time.
Can I use salted butter?
Yes, but consider reducing additional salt since the onion soup mix already contains sodium.
Can I make this dairy-free?
Yes. Substitute a dairy-free butter alternative.
What is the best potato for this recipe?
Baby Yukon Gold potatoes are ideal because they become buttery, creamy, and absorb the onion flavor beautifully. 🥔