Roast the hazelnuts: Preheat the oven to 350°F (175°C). Spread the hazelnuts in a single layer on a baking sheet and bake for 8–10 minutes, until lightly golden and fragrant. The skins should look slightly blistered.
Remove the skins: Let the hazelnuts cool for 3–4 minutes, then place them in a clean kitchen towel and rub to loosen the skins. Remove the peeled nuts and repeat with the remaining ones. (It’s fine if some skin remains.)
Cool completely: Allow the hazelnuts to cool to room temperature; warm nuts blend better, but hot nuts can release too much oil.
Blend into butter: Transfer the hazelnuts to a food processor or high-power blender. Add a pinch of salt if using, then blend, scraping the sides as needed.
The nuts will go through stages: crumbly → paste → thick butter → smooth & creamy. This may take 5–15 minutes, depending on your machine.
Store: Transfer the hazelnut butter to a clean jar or airtight container and refrigerate.
Video
Notes
Texture & Blending Tips:
If the mixture feels too thick or grainy, add 1–2 teaspoons neutral oil (hazelnut oil, avocado oil, or light olive oil).
Use the tamper (pusher) if your blender has one, it helps keep the nuts moving.
f your processor overheats, pause for a few minutes, then continue.
Storage:
Refrigerator: up to 3–4 weeks
Room temperature: 1–2 weeks (if kitchen is cool)
Freezer: up to 3 months (store in freezer-safe jar)