Prep Time: 45 mins Total Time: 1 hr 53 mins Servings: about 3 dozen Ingredients     2/3 cup  butter, softened     1/2 cup  sugar     1/4 teaspoon  salt     1   egg     1 teaspoon  vanilla     1-1/2 cups  all-purpose flour     Peppermint Filling     Peppermint candy canes, finely crushed Directions In a large mixing bowl, [...]