Spread the raw walnuts in a single layer on a baking sheet.
Place the baking sheet in the oven and toast the walnuts for 8-10 minutes, stirring once or twice during cooking. Check the walnuts for doneness by breaking one open. If the nut looks golden brown inside and has a fragrant, toasty aroma, it's ready.
Let the walnuts cool on the baking sheet for a few minutes before serving or using in a recipe. Store leftovers in an airtight container at room temperature for up to 1 week.
Notes
Storage:Store toasted walnuts in an airtight container at room temperature for up to 1 week or in the refrigerator for up to 6 months.Tips:Line the baking sheet with parchment paper. This makes clean up a breeze and you pick up all the walnuts at the same time by picking up the paper and transferring them to a container.Stir nuts during toasting. For even browning and to ensure all sides of the nuts get exposed to the heat, stir the walnuts once or twice during the roasting process.Watch the walnuts closely. Keep a close eye on the nuts during the toasting time to prevent burning.Check for doneness with your hands. Try breaking a walnut open - if the nut looks golden brown inside and has a fragrant aroma, it's ready.Cool the nuts before transferring them. You want to make sure the walnuts are completely cooled to help them firm up and achieve their ideal crunchiness. If you transfer them to a container while they are still warm, they will sweat and create moisture.