For best results, ensure the butter is very cold before using. This helps create a flaky scone. To toast the pecans, spread them on a baking sheet and bake at 350°F (175°C) for 5-7 minutes, or until fragrant and lightly browned. Let cool before chopping. If you don't have a food processor, you can cut the butter into the flour mixture using a pastry blender or your fingertips. Scones are best enjoyed fresh, but can be stored in an airtight container at room temperature for up to 2 days.