Keto Chicken in Brown Butter Leek Hazelnut Sauce with Roasted Cauliflower
🥑 Keto
Intermediate

Keto Chicken in Brown Butter Leek Hazelnut Sauce with Roasted Cauliflower

An original keto recipe featuring juicy golden-seared chicken breast served with a silky brown butter, leek, and toasted hazelnut sauce, paired with thyme-roasted cauliflower. Elegant, comforting, and low in carbs.

20 minPrep
30 minCook
50 minTotal
4Servings
KetoGluten-FreeLow CarbHigh ProteinDiabetic-Friendly

Important notice: This recipe is not medical advice. Consult your healthcare professional.

Ingredients

Adjust servings
4
  • 4 piezas, 680 g chicken breast (skinless, of tamaño medium)
  • 1 cabeza grande, 700 g cauliflower (cut en floretes)
  • 1 grande, 180 g leek (solo the parte blanca and verde clara, en medias lunas finas)
  • 70 g hazelnuts (tostadas and chopped gruesas)
  • 80 g butter (divided)
  • 180 ml heavy cream (or nata for montar)
  • 30 ml olive oil (divided)
  • 8 g fresh thyme (hojitas separadas, divided)
  • 2 dientes, 8 g garlic (chopped fino)
  • 120 ml chicken broth (without sugar added)
  • 30 g Parmesan cheese (grated fino)
  • 1 g lemon zest (finely grated)
  • 6 g salt (or to taste)
  • 2 g black pepper (freshly ground)

Nutrition facts

per serving

612 kcal
Calories
42 g
Protein
11 g
Carbs
44 g
Fat
4 g
Fiber
7 g
Net carbs

Approximate nutritional information. Estimated from the recipe’s ingredients and amounts, using standard reference nutrition values. It may vary with brands, sizes and cooking method. For guidance only; not a substitute for medical or dietary advice.

Allergens

DairyTree Nuts

Instructions

  1. 1

    Preheat the oven to 220°C / 425°F. Toss the cauliflower florets with 1 tablespoon olive oil, half of the thyme, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. Spread on a baking tray and roast for 25 to 30 minutes at 220°C / 425°F, turning halfway through, until golden and tender.

  2. 2

    While the cauliflower roasts, pat the chicken breasts dry with paper towels and season them with the remaining salt and the rest of the pepper.

  3. 3

    Heat a large skillet over medium-high heat. Add the remaining 1 tablespoon olive oil and 20 g butter. Sear the chicken breasts for 4 to 5 minutes per side, until deeply golden and the internal temperature reaches 74°C / 165°F. Transfer to a plate and let them rest.

  4. 4

    Reduce the heat to medium. In the same skillet, add 40 g butter and cook the leek for 4 to 5 minutes, stirring, until softened. Add the garlic and cook for 30 seconds more.

  5. 5

    Pour in the chicken broth and scrape up the browned bits from the pan. Cook for 2 minutes to reduce slightly. Add the heavy cream, Parmesan, lemon zest, and remaining thyme. Cook for 3 to 4 minutes, stirring, until the sauce is lightly thickened.

  6. 6

    In a small skillet or saucepan, melt the remaining 20 g butter over medium heat until it turns nutty and brown, about 2 to 3 minutes. Stir in the chopped hazelnuts, mix for 30 seconds, and pour this brown butter hazelnut mixture into the sauce. Stir well.

  7. 7

    Return the chicken to the skillet and spoon the sauce over it for 1 to 2 minutes over low heat to warm through without overcooking.

  8. 8

    Serve each chicken breast with roasted cauliflower and plenty of the leek, brown butter, and hazelnut sauce over the top.

Chef tips

Toast the hazelnuts beforehand for 8 minutes at 180°C / 350°F to deepen their flavor. If the sauce thickens too much, add 1 or 2 extra tablespoons of warm broth.

Substitutions

You can use boneless chicken thighs instead of breast, adjusting the cooking time until they reach 74°C / 165°F. Leek can be replaced with shallot, and hazelnuts can be swapped for pecans if preferred.

What I used to make it

Generic kitchen tools that work for this recipe. You don’t need to buy anything to make it.

  • Illustrative image: Air fryerIllustrative image

    Cosori Pro LE 5 Qt Air Fryer

    Browning and baking with little oil

    • Browns food with very little oil
    • Handy for vegetables, chicken and reheating
    • Check the basket capacity
    View on Amazon
  • Illustrative image: Digital kitchen thermometerIllustrative image

    TempPro TP19H Digital Thermometer

    Checking doneness of meat and chicken

    • Checks doneness of meat and chicken
    • Quick reading
    • Clean the probe after each use
    View on Amazon
  • Illustrative image: Non-stick frying panIllustrative image

    T-fal Ultimate Hard Anodized 12" Non-Stick Pan

    Eggs, omelets and stir-fries

    • Eggs and omelets that don’t stick
    • Comfortable, sturdy handle
    • Use wooden or silicone utensils
    View on Amazon

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