Caramelized Onion and Roasted Potato Skillet

This caramelized onion and roasted potato skillet is a simple yet deeply flavorful side dish featuring golden potatoes layered with slow-cooked onions. The result is a comforting dish with crisp edges, tender centers, and natural sweetness from the onions.

Why You’ll Love This Recipe

This recipe transforms basic pantry ingredients into a satisfying dish with minimal effort. The potatoes develop a rich, roasted texture while the onions caramelize slowly, adding depth and sweetness. It pairs well with a wide range of main courses and can also stand alone as a vegetarian meal.

Ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

  • Yukon Gold or yellow potatoes
  • Yellow onions
  • Olive oil
  • Unsalted butter
  • Fresh thyme
  • Garlic
  • Salt
  • Black pepper

Directions

  1. Preheat the oven to 200°C (400°F).
  2. Peel the potatoes and slice them into even rounds. Peel and thinly slice the onions.
  3. Heat olive oil and butter in a large oven-safe skillet over medium heat.
  4. Add the onions and cook slowly, stirring occasionally, until soft and lightly caramelized. This process should take about 15 minutes.
  5. Stir in the garlic and cook for an additional minute until fragrant.
  6. Arrange the potato slices evenly over the onions. Season with salt, black pepper, and fresh thyme.
  7. Transfer the skillet to the oven and roast uncovered for 30 to 35 minutes, or until the potatoes are tender and golden on top.
  8. Allow the dish to rest for a few minutes before serving.

Servings and Timing

This recipe serves approximately 4 people.
Preparation time is about 15 minutes, cooking time is 45 minutes, and total time is approximately 1 hour.

Variations

You may add grated Parmesan cheese during the final 10 minutes of roasting for a richer flavor. Fresh rosemary may be used instead of thyme. Thinly sliced sweet potatoes can replace regular potatoes for a sweeter variation.

Storage/Reheating

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven at 180°C (350°F) until warmed through, or reheat gently in a skillet to restore crispness.

FAQs

Can I use red potatoes instead of Yukon Gold?

Yes, red potatoes work well, though they may have a slightly firmer texture.

Do I need to peel the potatoes?

Peeling is optional. Leaving the skins on adds texture and nutrients.

Can this dish be made ahead of time?

Yes, it can be prepared in advance and reheated just before serving.

How do I prevent the onions from burning?

Cook the onions over medium to low heat and stir occasionally to ensure even caramelization.

Can I make this dish vegan?

Yes, replace butter with additional olive oil or a plant-based alternative.

What herbs pair well with this recipe?

Thyme, rosemary, and sage all complement the potatoes and onions.

Can I add other vegetables?

Thinly sliced leeks or mushrooms may be added with the onions.

How do I ensure even cooking?

Slice the potatoes evenly and spread them in a single layer.

Is this dish suitable for a main course?

It can serve as a light vegetarian main when paired with a salad or protein.

Can I cook this entirely on the stovetop?

Yes, but finishing in the oven ensures more even browning.

Conclusion

Caramelized onion and roasted potato skillet is a timeless, rustic dish that highlights the natural flavors of its ingredients. Easy to prepare and adaptable, it is an excellent addition to both everyday meals and special occasions.

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Caramelized Onion and Roasted Potato Skillet

Caramelized Onion and Roasted Potato Skillet

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A hearty and comforting skillet dish made with golden roasted potatoes and sweet caramelized onions, perfect as a vegetarian main or satisfying side.

  • Author: Emma Harper
  • Prep Time: 15 minutes
  • Cook Time: 40 minutes
  • Total Time: 55 minutes
  • Yield: 4 servings 1x
  • Category: Side Dish
  • Method: Roasting & Sautéing
  • Cuisine: Mediterranean
  • Diet: Vegetarian

Ingredients

Scale
  • 700 g baby potatoes, halved
  • 3 large onions, thinly sliced
  • 3 tbsp olive oil
  • 1 tbsp butter
  • 3 cloves garlic, minced
  • 1 tsp salt
  • 1/2 tsp black pepper
  • 1 tsp paprika
  • 1/2 tsp dried thyme
  • 2 tbsp fresh parsley, chopped

Instructions

  1. Preheat oven to 200°C.
  2. Toss potatoes with 2 tablespoons olive oil, salt, pepper, and paprika.
  3. Spread potatoes on a baking tray and roast for 30–35 minutes, turning once, until golden and tender.
  4. Meanwhile, heat remaining olive oil and butter in a large skillet over medium-low heat.
  5. Add sliced onions and cook slowly for 20–25 minutes, stirring occasionally, until deeply caramelized.
  6. Add garlic and thyme to the onions and cook for 1 minute.
  7. Add roasted potatoes to the skillet and toss gently to combine.
  8. Garnish with fresh parsley and serve hot.

Notes

  • Cook onions slowly to achieve maximum sweetness.
  • Add a splash of vegetable stock if onions begin to stick.
  • Serve with eggs or salad for a complete meal.

Nutrition

  • Serving Size: 1 serving
  • Calories: 310 kcal
  • Sugar: 6 g
  • Sodium: 420 mg
  • Fat: 14 g
  • Saturated Fat: 4 g
  • Unsaturated Fat: 9 g
  • Trans Fat: 0 g
  • Carbohydrates: 40 g
  • Fiber: 5 g
  • Protein: 6 g
  • Cholesterol: 10 mg
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