Buttery, crumbly pecan sandies with toasted pecans are a melt-in-your-mouth family cookie classic. These delicate, nutty shortbread cookies are perfect for holiday cookie exchanges.
Preheat oven to 350°F. Spread chopped pecans on a baking sheet and toast for 6–8 minutes, stirring once, until fragrant. Let cool completely.
In a large mixing bowl, cream unsalted butter and confectioners' sugar with a hand mixer on medium speed until light and fluffy, about 2–3 minutes.
Add vanilla extract and salt, mixing until fully combined. Gently fold in toasted pecans with a spatula.
Add flour in two additions, mixing on low speed just until a crumbly dough forms. Do not overmix; stop when the dough just holds together.
Scoop 1-tbsp portions of dough, roll into balls, and space them evenly on a parchment-lined baking sheet. Gently flatten each ball with your palm for even thickness.
Bake for 16–18 minutes, rotating the pan halfway through. Cookies should be light golden at the edges but not brown. Cool on the tray for 5 minutes before transferring to a wire rack to cool completely.