Yield: About 11⁄4 cups
Directions
Preheat oven to 350°F.
On a medium baking sheet scatter hazelnuts. Place in the oven and bake until fragrant and the skins are blistered, 12-15 minutes. Let cool completely.
In a double boiler or a heatproof bowl set over a saucepan of simmering water, gently melt dark and milk chocolate, stirring frequently, until smooth. Take pan off heat and set aside.
In a food processor process hazelnuts until ground into a paste. Add oil, cocoa powder, vanilla, and salt and process until very smooth. Add melted chocolate and process until combined, scraping down sides of bowl as needed.
Store in an airtight container at room temperature for up to 3 weeks.