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Crispy Potato Rösti with Sautéed Onion

Prep 20 min Cook 25 min Difficulty 3/5

Crispy potato rösti with sautéed onion — easy step-by-step guide for a golden, crunchy crust and tender interior. Ready in ~45 minutes.

Why this recipe works

This classic Swiss-style rösti is a simple, hands-on potato dish: grated russets mixed with sautéed onion, cooked until deep golden and crisp. It suits cooks who want a crunchy, comfort-food side or a hearty breakfast base.

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Key takeaways

Dry the grated potatoes well for best crispness.
Cook undisturbed on medium-low to form a deep golden crust.
Flip carefully using a plate or in sections to keep it intact.

Recipe guide

This classic Swiss-style rösti is a simple, hands-on potato dish: grated russets mixed with sautéed onion, cooked until deep golden and crisp. It suits cooks who want a crunchy, comfort-food side or a hearty breakfast base.

A simple method to get a golden, crackling rösti with soft, savory potato inside.

  • Dry the grated potatoes well for best crispness.
  • Cook undisturbed on medium-low to form a deep golden crust.
  • Flip carefully using a plate or in sections to keep it intact.

Ingredients

Ingredients (serves 4): 6 medium russet potatoes, 1/2 medium onion (grated or finely chopped), 2 tbsp vegetable oil, 2 tbsp unsalted butter, 1 tsp salt, 1/2 tsp black pepper, 1 tbsp chopped fresh parsley.

Step-by-step

1) Peel and coarsely grate potatoes into a bowl; grate or finely chop the onion and add. 2) Rinse grated potatoes under cold water, then transfer to a clean towel and squeeze out as much moisture as possible. 3) Return potatoes and onion to the bowl, season with salt and pepper and mix. 4) Heat oil and 1 tbsp butter in a large nonstick or cast-iron skillet over medium-high until shimmering. 5) Add potato mixture, spread into an even layer and press down with a spatula. Reduce heat to medium-low and cook undisturbed 10–12 minutes until deep golden on the bottom. 6) Slide rösti onto a plate, add remaining 1 tbsp butter to the skillet, invert plate to return rösti to skillet (or flip in sections) and cook 8–10 minutes more until golden and cooked through. 7) Drain briefly if needed, sprinkle with parsley and serve immediately.

Tips & Variations

Tips: Squeeze the potatoes dry for crispness; reserve a little heat when frying to avoid burning. Variations: Stir in a grated carrot or a handful of grated cheese before frying. Serving ideas: Serve with sour cream, smoked salmon, or a fried egg.

Ingredients

  • 6 medium russet potatoes
  • 1/2 medium onion
  • 2 tbsp vegetable oil
  • 2 tbsp unsalted butter
  • 1 tsp salt
  • 1/2 tsp black pepper
  • 1 tbsp chopped fresh parsley

Instructions

  1. Peel potatoes and grate coarsely into a bowl and grate or finely chop the onion and add to bowl
  2. Rinse grated potatoes under cold water, then transfer to a clean kitchen towel and squeeze out as much moisture as possible
  3. Return dried potatoes and onion to the bowl and season with salt and black pepper, mix to combine
  4. Heat vegetable oil and 1 tablespoon butter in a large nonstick or cast-iron skillet over medium-high heat until shimmering
  5. Add potato mixture to skillet and spread into an even layer, pressing down with a spatula to compact
  6. Reduce heat to medium-low, cook undisturbed until deep golden and crisp on the bottom, about 10–12 minutes
  7. Slide rösti onto a large plate, add remaining tablespoon butter to skillet, invert plate to return rösti to skillet to brown the second side, or flip in sections and cook until golden and cooked through, about 8–10 minutes more
  8. Drain briefly on paper towels if needed, sprinkle with chopped parsley and serve immediately

FAQs

How do I get the rösti extra crispy? Use starchy russet potatoes, squeeze out excess moisture thoroughly, and cook undisturbed to get a crisp crust.
What's the best way to flip the rösti without breaking it? Yes. After the first side is golden, slide rösti onto a plate, add butter to the pan, then invert the plate to brown the second side, or flip in sections.
Can I prepare parts of this ahead of time? Grate and squeeze the potatoes, keep the heat moderate (medium-low) once the rösti is in the pan, and drain briefly on paper towels if it's oily.