Irresistibly Buttery Walnut Cookies

Ingredients

• 1 cup (226g) unsalted butter, softened
• 3/4 cup (150g) granulated sugar
• 3/4 cup (165g) packed brown sugar
• 1 large egg
• 1 teaspoon vanilla extract
• 2 1/4 cups (281g) all-purpose flour
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1 1/2 cups (150g) chopped walnuts, toasted