Roasted Potatoes And Onions

The sound of onions hitting a hot oven rack, that slow sizzle building into something sweet, is the kind of kitchen music I never get tired of. My neighbor Deb once knocked on my door asking what smelled so incredible, and we ended up eating an entire pan of these potatoes standing at the counter. Roasted potatoes and onions are the dish I make when I want the oven to do all the work while I handle life.

I started making this on Sunday evenings when my kids were small and I needed something warm to fill the house while baths happened and homework got finished. The potatoes were usually half gone before they ever reached a plate. Even now, my daughter texts me from college asking for this recipe, and I suspect she is really just homesick.

Ingredients

• 2 lbs Yukon Gold or red potatoes: Yukon Golds give you that creamy center, while reds hold their shape a bit more firmly.
• 2 large yellow onions: Thick wedges hold up to roasting and turn sweet and golden instead of burning.
• 3 tbsp olive oil: Do not skimp here, the oil is what creates that shatteringly crisp exterior.
• 1 1/2 tsp kosher salt: Coarse salt seasons more evenly than fine table salt.
• 1/2 tsp freshly ground black pepper: Freshly cracked makes a real difference you can taste.
• 1 tsp dried thyme or rosemary: Thyme is earthy and gentle, rosemary is bold and piney, both work beautifully.
• 2 cloves garlic, minced (optional): Garlic burns faster than you think, so mince it fine and tuck it under the potatoes.
• 2 tbsp fresh parsley, chopped (optional): A bright finish that wakes everything up right before serving.

Instructions

Get the oven screaming hot:

Preheat to 425 degrees and line a large baking sheet with parchment paper so nothing sticks and cleanup is effortless.

Toss everything together:

Pile the potato cubes and onion wedges into a large bowl, drizzle with olive oil, and sprinkle with salt, pepper, herbs, and garlic, then use your hands to coat every piece evenly.

Spread them out properly:

Arrange everything in a single layer on the baking sheet with space between each piece, because crowding is the enemy of crispiness and the cause of sad steamed potatoes.

Roast and flip:

Slide the pan into the oven and roast for 35 to 40 minutes, flipping everything halfway through so each side gets a chance to turn golden and irresistible.

Finish and serve:

Scatter fresh parsley over the top while everything is still hot and serve straight from the pan if you are among friends.

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There was a winter night when the power went out and I finished roasting these on a gas stove in a cast iron skillet by candlelight. They were slightly charred and completely perfect, and my husband said they were the best I had ever made. Sometimes the kitchen accidents are the ones worth repeating.

Best Potatoes to Use

Yukon Golds are my go-to because they have enough starch to get crispy and enough moisture to stay fluffy inside. Red potatoes work well too if you prefer a firmer, waxier bite. Russets tend to dry out too much for this method, so save those for baking or fries instead.

Herb Variations That Work

Thyme is my default because it is mild and lets the potatoes shine, but smoked paprika turns this into something entirely different and deeply smoky. A pinch of garlic powder added alongside the fresh garlic doubles down on flavor. In summer, I toss fresh rosemary sprigs right onto the pan and let the heat release their oils.

What to Serve Alongside

These potatoes are flexible enough to sit next to almost anything on your table. They are particularly good alongside roasted chicken, grilled fish, or a big green salad for a simple vegetarian meal.

• Leftovers reheat beautifully in a skillet with a splash of oil.
• A fried egg on top turns yesterday's potatoes into a proper breakfast.
• Always taste and adjust salt right before serving because oven heat dulls seasoning slightly.

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Keep this recipe close because it will rescue you on nights when cooking feels like too much and you just need something warm and golden on the table. The oven does nearly everything, and the result always feels like more effort than it was.

Common Questions

→ How do I get the crispiest roasted potatoes?

Soak cut potatoes in cold water for 30 minutes to remove excess starch, then drain and pat completely dry before tossing with oil. Arrange in a single layer without overcrowding the pan. Roasting at 425°F promotes optimal crisping.

→ What herbs work best with roasted potatoes and onions?

Thyme and rosemary are classic choices that pair beautifully with potatoes. Fresh or dried versions both work well. You can also substitute with oregano, sage, or add paprika for a smoky variation.

→ Can I prepare this dish ahead of time?

Cut the vegetables up to a day in advance and store them separately in the refrigerator. Toss with oil and seasonings just before roasting for the best texture and flavor. Leftovers reheat well in a 375°F oven.

→ Why should I use Yukon Gold or red potatoes?

These varieties hold their shape well during roasting and develop a creamy interior while crisping on the outside. Their thin skins don't require peeling, adding both texture and nutrients to the finished dish.

→ What main dishes pair well with roasted potatoes and onions?

This versatile side complements roasted chicken, beef tenderloin, pork chops, grilled salmon, or baked cod. For a vegetarian meal, serve alongside a fresh green salad or with fried or poached eggs for breakfast.

→ Can I roast other vegetables with the potatoes?

Root vegetables like carrots, parsnips, or sweet potatoes work well since they have similar roasting times. Add quicker-cooking vegetables like bell peppers or zucchini during the last 15-20 minutes to prevent overcooking.