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Potato and Kale Cakes with Rouille

These crispy potato and kale cakes with rouille offer a sophisticated vegetarian take on classic comfort food. By pan-frying mashed potatoes enriched with earthy kale and aromatic thyme, you achieve a wonderful contrast between the golden, crunchy exterior and the fluffy centre. The addition of nutmeg provides a subtle warmth that complements the greens perfectly, making this a satisfying dish for a midweek supper or a weekend brunch.

To elevate the flavours, the cakes are served with a homemade rouille—a silky, garlic-infused sauce with a hint of smoked paprika and cayenne pepper. This vibrant condiment adds a creamy, piquant finish to the savoury potato cakes. It is an excellent way to use up seasonal kale and store-cupboard staples, providing a nutritious and heart-healthy meal that the whole family will enjoy.

Continue reading below

Ingredients for Potato and Kale Cakes with Rouille

  • 120ml mayonnaise

  • 1 tablespoon extra-virgin Olive oil

  • 2 garlic cloves, pressed

  • 2 teaspoons tomato paste

  • 1/8 teaspoons smoked paprika

  • Pinch of cayenne pepper

  • 675g unpeeled russet potatoes, scrubbed, cut into 1-inch cubes

  • 60ml whole milk

  • 2 tablespoons (1/4 stick) unsalted butter

  • 1 teaspoon coarse kosher salt, divided

  • 3 1/2 tablespoons extra-virgin olive oil, divided

  • 240ml chopped onion

  • 1 large garlic clove, finely chopped

  • 230g kale, centre rib and stem cut from each leaf, leaves coarsely chopped

  • 1 tablespoon chopped fresh thyme

  • 1/8 teaspoons ground nutmeg

Whisk all ingredients in medium bowl. Season rouille to taste with salt and freshly ground black pepper. DO AHEAD: Can be made 1 day ahead. Cover and chill.

Cook potatoes in large saucepan of boiling salted water until tender, about 25 minutes. Drain; return potatoes to same saucepan. Add milk and butter. Mash potatoes (with peel) until smooth. Season with 1/2 teaspoons coarse salt and 1/2 teaspoons pepper. Transfer 450g mashed potatoes to large bowl and cool (reserve remaining potatoes for another use).

Heat 1 1/2 tablespoons oil in large deep skillet over medium heat. Add onion and garlic. Sauté until onion softens, about 5 minutes. Increase heat to medium-high. Add kale and thyme. Toss until kale wilts, about 5 minutes. Add kale mixture, 1/2 teaspoons coarse salt, 1/2 teaspoons pepper, and nutmeg to potatoes; blend. Cool potato mixture 30 minutes.

Shape potato mixture by 60ml fuls into 1/2-inch-thick patties. Arrange on rimmed baking sheet. DO AHEAD: Can be made up to 2 hours ahead. Let stand at room temperature.

Heat 2 tablespoons oil in large nonstick skillet over medium-high heat. Add cakes and cook, without moving, until cakes are brown and crispy on bottom, 3 to 4 minutes. Carefully turn cakes over. Cook until brown on bottom, 2 to 3 minutes longer. Transfer to plates. Top each cake with dollop of rouille.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 28 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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