Slow Cooker Onion Soup Potatoes are the easiest, most flavorful side dish you’ll want to make again and again. With just three ingredients, they deliver melt-in-your-mouth texture and crave-worthy onion flavor. All it takes is diced potatoes, dry onion soup mix, and a drizzle of olive oil or butter—then let your slow cooker do all the work.
These cozy, buttery potatoes are perfect alongside any protein or as a comforting side for weeknights, holidays, or potlucks. Best of all, there’s no oven needed and zero fuss involved. Just set it, forget it, and enjoy later.
Interestingly, onion soup mix has long been a staple in home kitchens for adding instant savory depth. When paired with tender potatoes and cooked low and slow, the flavor soaks right in for a dish that feels nostalgic yet fresh.
Whether you’re hosting a family dinner or need an easy weeknight solution, this recipe is a guaranteed crowd-pleaser.
Recipe Yield: 6 servings
INGREDIENTS
6–7 medium Yukon gold potatoes, diced into 1-inch cubes
1 (1 oz) packet dry onion soup mix
3 tbsp olive oil or melted butter
INSTRUCTIONS
1. Prep the potatoes:
Wash and dice the potatoes into 1-inch chunks. No need to peel unless preferred for texture.
2. Season generously:
Toss the diced potatoes in a bowl with olive oil (or melted butter) and the dry onion soup mix until fully coated.
3. Let the slow cooker work:
Transfer the seasoned potatoes to a greased slow cooker. Spread evenly. Cover and cook on low for 4–5 hours or high for 2–3 hours, until the potatoes are fork-tender.
4. Finish and serve:
Stir gently before serving. Optional garnish: fresh parsley or chopped chives for color and freshness.
Helpful Tips to Perfect This Recipe
- Use Waxy Potatoes for Texture: Yukon gold or red potatoes hold shape and stay buttery soft without falling apart.
- Stir Just Once at the End: To avoid mushiness, don’t stir during cooking. Wait until just before serving.
- Customize with Add-Ins: Toss in garlic, rosemary, or a sprinkle of cheese near the end for extra flair.
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