Ingredients

Cookies:
3/4 cup unsalted butter room temperature
1/2 cup granulated sugar
1/4 cup packed light brown sugar
1 egg
1 1/2 teaspoons vanilla
2 cup all-purpose flour
1/4 teaspoon salt

Frosting:
1/2 cup unsalted butter melted
2 cups powdered sugar
2 tablespoons spiced rum or 1/4 teaspoon rum extract
Ground nutmeg for garnish

Directions

Preheat oven to 350 degrees F. Line a baking sheet with parchment paper.

In a medium bowl, combine flour and salt; set aside.

In a large bowl, beat together 3/4 cup butter and sugars until creamy. Add egg and vanilla; mix to combine. Add flour mixture and mix until just combined.

Scoop tablespoonfuls of cookie dough, and roll into balls. Using the back of a teaspoon measuring spoon, make indentations in the middle of each circle.

Bake for 12 minutes. Remove from oven and cool completely.

In a small bowl, beat together 1/2 cup butter, powdered sugar, and rum until smooth. Transfer frosting to a piping bag. Pipe a dollop of frosting into the indentation of each cookie. Sprinkle with a little ground nutmeg to finish.