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Keto Sauces

Blender Sauce Noisette (Hollandaise with Hazelnut

Blender Sauce Noisette is my go-to when I want to dress up simple keto meals with a touch of elegance. This nutty spin on classic hollandaise is silky, rich, and incredibly easy—thanks to the blender method. I often whip up a batch to elevate weeknight dinners; it feels indulgent yet comes together in under 30 minutes. The toasted hazelnut flavor adds depth that pairs beautifully with everything from asparagus to fish.

15 min Prep time 10 min Cook time 25 min Total time 4 Servings 520 Calories
Blender Sauce Noisette (Hollandaise with Hazelnut

Ingredients

  • /2 cup hazelnuts
  • tablespoons butter, softened
  • cup butter
  • egg yolks
  • pinch salt
  • pinch white pepper
  • tablespoon fresh lemon juice

Instructions

  1. Step 1

    I begin by toasting the hazelnuts in a 400°F oven until fragrant, about 8 minutes. After cooling, I rub them in a kitchen towel to remove the skins—a little effort that makes a big difference. Then, grind the nuts into a fine powder in a blender, adding two tablespoons of softened butter to create a smooth hazelnut butter. Set that aside. Next, melt one cup of butter in a small saucepan and keep it hot but not boiling. In the same blender (no need to wash), combine egg yolks, salt, white pepper, and lemon juice. Blend briefly, then with the motor running on high, slowly drizzle in the hot butter through the lid opening. This steady stream is key to a thick, creamy emulsion. Finally, blend in the hazelnut butter until just combined. Serve immediately, or keep it warm in a bowl set over hot water. The aroma of toasted hazelnuts fills the kitchen, promising a sauce that’s both comforting and luxurious.

Chef's Tip

I always add a tiny pinch of cayenne to brighten the nutty flavor without adding heat—it’s a subtle trick that makes the sauce sing. Also, make sure your butter is hot but not boiling when streaming into the blender; it ensures a foolproof emulsion every time.

Storage Tips

Store any leftovers in an airtight container in the fridge for up to 3 days. Reheat gently in a double boiler or microwave in short bursts, whisking often to bring back the velvety texture.

Variation Tips

Swap hazelnuts for almonds or macadamia nuts for a different nutty note. Serve over steamed asparagus, poached eggs, or grilled salmon for a keto-friendly feast.

Frequently Asked Questions