Roasted potatoes and onions make for a simple yet delicious side dish that pairs well with almost any main course. The combination of crispy potatoes and caramelized onions creates a flavorful and satisfying experience. This recipe is perfect for a weeknight dinner or a special occasion.
All the ingredients in this recipe are commonly found in most households. However, if you need to visit the supermarket, make sure to pick up fresh potatoes and onions. The olive oil adds a rich flavor and helps in roasting the vegetables to perfection.

Ingredients For Roasted Potatoes And Onions Recipe
Potatoes: Choose firm and fresh potatoes for the best texture and flavor.
Onions: Use any variety of onions you prefer, but yellow or red onions work best for roasting.
Olive oil: This helps in roasting the potatoes and onions to a golden brown and adds a rich flavor.
Salt: Enhances the natural flavors of the potatoes and onions.
Black pepper: Adds a touch of heat and depth to the dish.
Technique Tip for This Recipe
To achieve perfectly roasted potatoes and onions, make sure to cut them into uniform pieces. This ensures even cooking and prevents some pieces from burning while others remain undercooked. Additionally, for an extra layer of flavor, consider tossing the mixture with a few cloves of minced garlic or a sprinkle of rosemary before roasting.
Suggested Side Dishes
Alternative Ingredients
potatoes - Substitute with sweet potatoes: Sweet potatoes offer a slightly sweeter flavor and a different nutritional profile, adding variety to the dish.
potatoes - Substitute with carrots: Carrots provide a different texture and a natural sweetness, which can complement the roasted flavors well.
onions - Substitute with shallots: Shallots have a milder and sweeter taste compared to onions, which can add a subtle flavor to the dish.
onions - Substitute with leeks: Leeks offer a more delicate and slightly sweet flavor, making them a good alternative to onions.
olive oil - Substitute with avocado oil: Avocado oil has a high smoke point and a neutral flavor, making it a suitable replacement for olive oil in roasting.
olive oil - Substitute with grapeseed oil: Grapeseed oil is another high smoke point oil with a neutral taste, ideal for roasting vegetables.
salt - Substitute with sea salt: Sea salt can provide a different mineral content and a slightly different flavor profile compared to regular table salt.
salt - Substitute with soy sauce: Soy sauce can add a umami flavor and saltiness, giving the dish a different depth of flavor.
black pepper - Substitute with white pepper: White pepper has a slightly different flavor and can be used to maintain the peppery taste without the black specks.
black pepper - Substitute with cayenne pepper: Cayenne pepper adds a bit of heat and a different kind of spiciness, which can enhance the overall flavor of the dish.
Other Alternative Recipes Similar to This Dish
How to Store or Freeze This Dish
- Allow the roasted potatoes and onions to cool completely before storing. This prevents condensation and sogginess.
- Transfer the cooled mixture into an airtight container. For best results, use a container that fits the amount of food snugly to minimize air exposure.
- Store in the refrigerator for up to 4 days. The flavors will meld beautifully, making it even more delicious over time.
- For freezing, spread the cooled potatoes and onions on a baking sheet in a single layer. Freeze until solid, about 1-2 hours. This prevents them from sticking together.
- Once frozen, transfer the vegetables to a freezer-safe bag or container. Label with the date to keep track of freshness.
- Frozen roasted potatoes and onions can be stored for up to 3 months. They make a quick and easy side dish for busy nights.
- To reheat, preheat your oven to 375°F (190°C). Spread the frozen mixture on a baking sheet and bake for 20-25 minutes, or until heated through and crispy.
- Alternatively, you can reheat in a skillet over medium heat. Add a splash of olive oil to the pan and cook, stirring occasionally, until warmed and crispy.
- Avoid microwaving as it can make the potatoes and onions soggy. For the best texture, stick to oven or skillet reheating methods.
How to Reheat Leftovers
Oven Method:
- Preheat your oven to 375°F (190°C).
- Spread the leftover roasted potatoes and onions evenly on a baking sheet.
- Cover with aluminum foil to prevent drying out.
- Bake for about 15-20 minutes, or until heated through. Remove the foil for the last 5 minutes to regain some crispiness.
Stovetop Method:
- Heat a non-stick skillet over medium heat.
- Add a small amount of olive oil or butter to the skillet.
- Add the leftover potatoes and onions to the skillet.
- Stir occasionally, cooking for about 10 minutes, or until heated through and crispy.
Microwave Method:
- Place the leftovers in a microwave-safe dish.
- Cover with a microwave-safe lid or plastic wrap, leaving a small vent.
- Microwave on high for 2-3 minutes, stirring halfway through. Continue heating in 1-minute intervals if needed, until hot.
Air Fryer Method:
- Preheat your air fryer to 350°F (175°C).
- Place the roasted potatoes and onions in the air fryer basket in a single layer.
- Heat for about 5-7 minutes, shaking the basket halfway through to ensure even heating.
Toaster Oven Method:
- Preheat the toaster oven to 375°F (190°C).
- Spread the leftovers on a toaster oven tray.
- Bake for about 10-15 minutes, or until heated through and crispy.
Best Tools for This Recipe
Oven: Used to roast the potatoes and onions at the specified temperature.
Mixing bowl: Used to combine the potatoes, onions, olive oil, salt, and black pepper.
Baking sheet: Used to spread the mixture evenly for roasting.
Spatula: Used to stir the mixture halfway through the roasting process.
Measuring cups: Used to measure the potatoes and onions.
Measuring spoons: Used to measure the olive oil, salt, and black pepper.
Knife: Used to dice the potatoes and slice the onions.
Cutting board: Used as a surface for dicing the potatoes and slicing the onions.
How to Save Time on This Recipe
Preheat the oven early: Start preheating your oven while you prepare the ingredients to save time.
Use a food processor: Slice the onions quickly using a food processor.
Microwave the potatoes: Partially cook the potatoes in the microwave for 5 minutes before roasting.
Line the baking sheet: Use parchment paper or a silicone mat to reduce cleanup time.
Batch preparation: Double the recipe and store leftovers for quick meals later in the week.

Roasted Potatoes and Onions Recipe
Ingredients
Main Ingredients
- 4 cups Potatoes, diced
- 2 cups Onions, sliced
- 2 tablespoon Olive oil
- 1 teaspoon Salt
- 0.5 teaspoon Black pepper
Instructions
- Preheat your oven to 425°F (220°C).
- In a mixing bowl, combine the potatoes, onions, olive oil, salt, and black pepper.
- Spread the mixture evenly on a baking sheet.
- Roast in the preheated oven for 40 minutes, stirring halfway through, until the potatoes are golden brown and tender.
- Serve hot.
Nutritional Value
Keywords
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