Creating your Christmas Kitchen Sink Cookies is straightforward and fun. Here are the steps to follow:

1. Preheat Oven: Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
2. Mix Dry Ingredients: In a medium bowl, combine the flour, baking soda, baking powder, and salt. Whisk until well-blended.
3. Cream Butter and Sugars: In a large mixing bowl, beat together the softened butter, granulated sugar, and brown sugar until creamy and smooth.
4. Add Eggs and Vanilla: Beat in the eggs one at a time, followed by the vanilla extract. Continue mixing until combined.
5. Combine Wet and Dry Ingredients: Gradually add the dry mixture into the wet mixture, stirring until just combined.
6. Fold in Add-Ins: Stir in the chocolate chips, oats, chopped nuts, crushed pretzels, dried cranberries, shredded coconut, and butterscotch chips (if using). Mix until evenly distributed.
7. Drop Cookie Dough: Using a cookie scoop or a spoon, drop rounded tablespoons of dough onto the prepared baking sheet, leaving space between each cookie.
8. Bake: Bake in the preheated oven for 10–12 minutes or until the edges are lightly golden. The centers may look slightly underbaked; this is okay as they will continue to cook on the baking sheet.
9. Cool Cookies: Allow the cookies to cool on the baking sheet for about 10 minutes. Then, transfer them to a wire rack to cool completely.

These steps ensure that anyone can create the deliciously diverse flavors of Christmas Kitchen Sink Cookies without hassle.