Step 1: Preheat oven to 350°F (175°C) and line baking sheets with parchment paper.
Step 2: In a large bowl, cream together softened butter and powdered sugar until light and fluffy.
Step 3: Mix in vanilla extract, fresh lemon juice, and lemon zest until well combined.
Step 4: Gradually add flour and salt to the butter mixture, mixing until a soft dough forms.
Step 5: Fold in finely chopped pecans until evenly distributed throughout the dough.
Step 6: Scoop tablespoon-sized portions of dough and roll into smooth balls.
Step 7: Place dough balls 2 inches apart on prepared baking sheets.
Step 8: Bake for 12-15 minutes until bottoms are lightly golden and cookies are set.
Step 9: Let cookies cool on baking sheets for 5 minutes, then roll in powdered sugar while still warm.
Step 10: Cool completely on wire racks, then roll in powdered sugar again for a snowy appearance.