This 3-Ingredient Onion Soup Roasted Potatoes recipe is a classic, foolproof side dish that delivers crispy, golden skin on the outside and fluffy, tender potato on the inside. By tossing sliced raw potatoes with vegetable oil and dry onion soup mix, the seasoning bakes directly onto the skin, creating an incredibly flavorful, savory crust with zero chopping required.
The 3 Ingredients
- Russet or Yukon Gold Potatoes (2 lbs) – Cut into 1-inch bite-sized cubes or wedges.
- Olive Oil or Vegetable Oil (⅓ cup) – Helps the potatoes roast up ultra-crispy while binding the dry seasoning.
- Dry Onion Soup Mix (1 packet / 1.5 oz) – Delivers all the caramelized onion, garlic, salt, and savory herbs in one single step.
(Optional finish: A sprinkle of fresh chopped parsley or green onions for color).
Step-by-Step Instructions
- Preheat & Prep: Preheat your oven to 425°F (220°C). Line a large rimmed baking sheet with aluminum foil or parchment paper and spray lightly with non-stick cooking spray.
- Chop the Spuds: Wash and pat the potatoes completely dry with paper towels (dry potatoes get crispier!). Cut them into uniform 1-inch cubes or wedges.
- Coat the Potatoes: Place the potato cubes into a large bowl (or directly onto the sheet pan). Drizzle with the olive oil, then sprinkle the entire packet of dry onion soup mix over the top. Toss thoroughly until every piece is evenly coated in the oil and seasoning.
- Spread Out in a Single Layer: Spread the potatoes onto the prepared baking sheet. Make sure they are in a single layer with space between them—if the pan is overcrowded, the potatoes will steam instead of crisping!
- Roast to Golden Perfection: Roast for 30–35 minutes, flipping the potatoes halfway through with a spatula, until the edges are deep golden-brown, crispy, and easily pierced with a fork.
- Serve Hot: Transfer to a serving dish and serve piping hot straight from the oven!
Pro Tips & Variations
- The Dry Potato Secret: Moisture is the enemy of crispiness! After washing your cut potatoes, make sure to dry them thoroughly with paper towels before tossing them in the oil and onion mix.
- Add Parmesan: Sprinkle ½ cup of grated Parmesan cheese over the potatoes during the last 5 minutes of roasting for an extra savory cheese crust.
- Ranch Alternative: Swap the onion soup packet for 1 packet of dry Ranch seasoning mix for classic Garlic Ranch Roasted Potatoes.
Serving Suggestions
- Main Dish Pairings: These crispy roasted potatoes pair spectacularly next to Oven-Baked 3-Ingredient Chicken, grilled steaks, or pork chops.
- Dip Options: Serve alongside a bowl of sour cream, ranch dressing, or warm cheese sauce for dipping.
