Creating Christmas Butter Swirl Cookies is a simple and enjoyable process. Just follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper.
2. Cream Butter and Sugar: In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy.
3. Add Egg and Vanilla: Beat in the egg and vanilla extract until well combined.
4. Combine Dry Ingredients: In another bowl, whisk together the flour, baking powder, and salt. Gradually add this mixture to the wet ingredients, stirring until a soft dough forms.
5. Divide the Dough: Divide the dough into two equal portions.
6. Color the Dough: Add a few drops of red gel food coloring to one portion and green to the other. Mix until the colors are evenly distributed.
7. Chill the Dough: Wrap each colored dough in plastic wrap and refrigerate for about 30 minutes to firm up.
8. Roll the Dough: Once chilled, take both doughs and roll each into a log about 1 inch in diameter.
9. Swirl the Dough: Place the two logs side by side and gently roll them together to create a swirl effect.
10. Slice the Cookies: Using a sharp knife, slice the dough into ¼-inch thick rounds and place them on the prepared baking sheets.
11. Bake: Bake in the preheated oven for 12-15 minutes, or until the edges are lightly golden.
12. Cool: Remove from the oven and let cool on the baking sheets for about 10 minutes before transferring to wire racks to cool completely.
13. Optional Toppings: If desired, sprinkle with festive sprinkles while still warm.

With these simple steps, you’ll have an amazing batch of Christmas Butter Swirl Cookies ready to share!