Roasted Potatoes And Onions

The oven had just hit 425 degrees and my apartment smelled like thyme and scorched olive oil before I even realized I had forgotten to toss the potatoes. That first batch was a mess of stuck on parchment and uneven browning, but the crispy edged onions salvaged everything. Roasted potatoes and onions are the kind of side dish that sounds too simple to matter until you pull a sheet pan of golden, caramelized perfection from the oven and wonder why you ever bothered with anything fancier.

I started making this regularly after a friend brought it to a potluck and three people asked for the recipe before dinner was over. Now it shows up at nearly every gathering I host, especially in fall and winter when the oven is always on anyway.

Ingredients

• 2 lbs Yukon Gold or red potatoes: Yukon Golds hold their shape beautifully while getting creamy inside, and their thin skin means no peeling required.
• 2 large yellow onions: Cut them into thick wedges so they do not burn before the potatoes finish cooking.
• 3 tbsp olive oil: Be generous here because the oil is what creates that shatteringly crisp exterior.
• 1 1/2 tsp kosher salt: Potatoes need more salt than you think, and kosher salt distributes more evenly than table salt.
• 1/2 tsp freshly ground black pepper: Freshly cracked makes a noticeable difference in the final flavor.
• 1 tsp dried thyme or rosemary: Thyme gives an earthy warmth while rosemary leans more fragrant and piney.
• 2 cloves garlic, minced (optional): Add it if you want a savory depth, but skip it if you prefer the pure potato and onion sweetness.
• 2 tbsp fresh parsley, chopped (optional): A bright finish that cuts through the richness right at the end.

Instructions

Preheat and prepare:

Crank the oven to 425 degrees F and line a large baking sheet with parchment paper so nothing sticks and cleanup is effortless.

Toss everything together:

Pile the cubed potatoes and onion wedges into a large bowl, pour in the olive oil, sprinkle the salt, pepper, herbs, and garlic over the top, and use your hands to coat every piece evenly.

Spread it out:

Arrange the vegetables on the baking sheet in a single layer with space between each piece because crowding is the enemy of crispiness and will steam them instead.

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 the onions caramelize into sweet, jammy bits.

Finish and serve:

Scatter fresh parsley over the top while everything is still hot and serve immediately because roasted potatoes wait for no one.

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There was a Sunday last January when I made these for myself with nothing else on the plate, standing in the kitchen eating off the pan while snow came down outside. Some dishes are just comfort on a tray.

Picking the Right Potato

Yukon Golds are my go to because they walk the line between fluffy and waxy better than any other variety. Russets get too mealy for roasting with onions, and red potatoes can sometimes stay a bit firm in the center. If you only have reds on hand, just cut them slightly smaller so they cook through evenly.

Making It Your Own

This recipe is a blank canvas and I have never made it the same way twice. Smoked paprika turns the whole thing into something that tastes like a campfire side dish. A squeeze of lemon juice at the end brightens everything up beautifully.

Serving Suggestions and Pairings

These potatoes can anchor a whole meal or sit quietly beside a main course without competing for attention. They are especially good alongside roasted chicken, grilled sausages, or a simple green salad with a sharp vinaigrette.

• Leftovers reheat beautifully in a skillet with a little extra oil for a breakfast hash situation.
• A fried egg on top of leftover roasted potatoes and onions is one of the best quick meals you will ever have.
• Always make more than you think you need because they disappear faster than you expect.

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Keep this recipe in your back pocket for nights when you want something warm and satisfying without thinking too hard. It will never let you down.

Recipe 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. Ensure vegetables are spread in a single layer without overcrowding the pan, which allows proper air circulation and browning.

→ Can I prepare this dish ahead of time?

You can cut the vegetables and toss them with oil and seasonings up to a day in advance. Store the mixture in the refrigerator in an airtight container. When ready to roast, bring to room temperature for about 20 minutes before placing in the oven for best results.

→ What herbs work best in this roasted vegetable blend?

Dried thyme and rosemary are excellent choices that hold up well to high-heat roasting. Fresh rosemary, sage, or oregano also work beautifully. For a brighter flavor profile, add fresh herbs like parsley or chives after roasting as a garnish rather than during cooking.

→ Why are my onions not caramelizing properly?

Proper caramelization requires the right oven temperature and adequate spacing. Ensure your oven is fully preheated to 425°F and that the onion wedges are cut thick enough to hold their shape but not so thick that they steam. Pat vegetables dry before roasting to prevent steaming.

→ Can I use different potato varieties?

Yukon Gold and red potatoes are ideal because they hold their shape well and develop a lovely crispy exterior. Russet potatoes will work but may become softer. Waxy potatoes like fingerlings will remain firm but may not achieve the same level of crispiness.

→ What main dishes pair well with this side?

This versatile complement works beautifully alongside roasted chicken, beef tenderloin, grilled salmon, or pork chops. It's also substantial enough to serve as a vegetarian main when paired with a fresh green salad or over mixed greens with a vinaigrette dressing.