📖 Instructions

1. Before you even touch that flour, make sure your butter is properly softened. Not melted, not rock-hard, but perfectly pliable, like a good quality playdough. Take it out of the fridge at least an hour before you plan to bake. This small step truly makes a big difference in the texture of your final cookies.
2. In a large bowl, whisk together your dry ingredients: the all-purpose flour, baking powder, and salt. Give it a good, thorough mix to ensure everything is evenly distributed. This prevents any surprises, like a pocket of salt, in your cookies later. Set this aside.
3. Now, in the bowl of your stand mixer fitted with the paddle attachment, or with a hand mixer, beat the softened unsalted butter and granulated sugar together on medium speed. You're aiming for a light, fluffy, and pale mixture, almost like whipped cream. This usually takes about 2-3 minutes. Don't rush this step; it's crucial for creating that tender crumb.
4. Crack your egg into a separate small bowl first to check for any shell bits (we've all been there!). Then, add the egg and the pure vanilla extract to the butter-sugar mixture. Beat on medium speed until everything is just combined. Scrape down the sides of the bowl with a spatula to make sure no butter is hiding at the bottom.
5. Reduce your mixer speed to low and gradually add the dry ingredient mixture to the wet ingredients. Mix until the flour is just incorporated and a soft dough forms. It's really important not to overmix here. Overmixing develops the gluten too much, leading to tough, chewy cookies, and nobody wants a tough Christmas cookie!
6. Divide your dough into two equal portions. Gently flatten each portion into a disk, then wrap them tightly in plastic wrap. Refrigerate the dough for at least 1 hour, or up to 2 days. This chilling step is non-negotiable! It firms up the butter, prevents spreading, and makes the dough much easier to handle when rolling.
7. When you're ready to bake, preheat your oven to 375°F (190°C). Line two large baking sheets with parchment paper or silicone baking mats. This ensures your cookies don't stick and bake evenly.
8. Lightly flour a clean work surface and your rolling pin. Take one chilled dough disk out of the fridge. If it's too hard, let it sit for a few minutes to soften just enough to roll. Roll the dough out to an even 1/4-inch thickness. Try to keep the thickness consistent across the entire sheet of dough for even baking.
9. Using your favorite Christmas-themed cookie cutters, cut out shapes from the rolled dough. Work quickly but gently. Place the cut-out cookies about 1 inch apart on your prepared baking sheets. Gather any dough scraps, gently press them together, and re-roll once more. Avoid re-rolling too many times, as this can make the cookies tough.
10. Before baking, generously sprinkle the tops of the cut-out cookies with sparkling sugar. Don't be shy here! The more sparkle, the merrier. Lightly press the sugar into the dough so it adheres well.
11. Bake one sheet at a time in the preheated oven for 8-10 minutes, or until the edges are very lightly golden. The centers should still look soft. Baking time can vary, so keep a close eye on them. Overbaking leads to dry cookies.
12. Once baked, immediately transfer the cookies from the hot baking sheets to a wire cooling rack to cool completely. Allowing them to cool on the hot sheet can continue to bake them. Once fully cooled, they're ready to be admired and devoured! If you wish, you can add a simple glaze or royal icing after cooling, but I often find the sparkling sugar is plenty.