Preheat oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a large bowl, cream together softened butter and granulated sugar until light and fluffy.

Beat in the egg and vanilla extract until well combined.

Whisk together flour and salt, then gradually add to the wet ingredients until a stiff dough forms.

Divide dough, tinting a small portion pink for ear accents if desired.

Roll dough into 1-inch balls and place on the baking sheet.

Press the center of each ball with a bottle cap or thumb to create a button indentation.

Use a straw to poke four small holes in the center of the indentation to mimic button holes.

Shape two small elongated ovals for ears and press firmly onto the top of each cookie circle.

Bake for 10 to 12 minutes or until edges are just set but not browned.

Allow cookies to cool completely on a wire rack before serving.