Mix together the powdered sugar, butter, and vanilla until creamy and smooth.
Gradually stir in the flour, 1/4 cup crushed candies, and the salt. Then fold in the pecans.
Shape the dough into 1-inch balls, and place them 2 inches apart on an ungreased cookie sheet.
Bake 8-9 minutes until they are set but not browned.
While cookies are baking, set up 2 bowls, 1 with powdered sugar and the other with the remaining crushed candies (you will be rolling the cookies in this).
When cookies come out of the oven, immediately roll them in powdered sugar. Roll again if needed. After 10 minutes, roll powdered cookies in the remaining crushed candies, and reroll again here as well if needed.