How To: Make Homemade Nutella
Toast 1 cup peeled hazelnuts in a dry pan until they are fragrant and golden, then let cool. Meanwhile, melt 4 ounces semisweet chocolate (not chips) and 2 ounces unsalted butter (4 tablespoons). Stir in 1 teaspoon vanilla extract.
Blend cooled nuts in a food processor until smooth, 3 to 5 minutes, drizzling in 1 to 2 tablespoons nut or vegetable oil. With the machine running, add the chocolate mixture, 3 tablespoons sweetened condensed milk, and 1/2 teaspoon kosher salt. Transfer to a container and refrigerate.