Step 1: Prepare the Dough

1. In a large mixing bowl, cream together the softened butter and powdered sugar until the mixture is light and fluffy.
2. Mix in the peppermint extract and green food coloring (if using) until evenly blended.
3. Gradually add the all-purpose flour and salt to the bowl, stirring until a soft dough forms.

Step 2: Chill the Dough

1. Wrap the dough in plastic wrap and refrigerate for at least 30 minutes to firm up.

Step 3: Shape and Bake

1. Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
2. Roll the chilled dough into 1-inch balls and arrange them on the prepared baking sheet, spacing them about 1 inch apart.
3. Bake in the preheated oven for 10–12 minutes, or until the bottoms are lightly golden. Allow the cookies to cool slightly on the baking sheet.

Step 4: Coat in Powdered Sugar

1. While the cookies are still warm, roll them in powdered sugar to create a snowball effect.
2. Let the cookies cool completely, then roll them again in powdered sugar for a thicker coating.