📖 Instructions

1. Gather Your Tools & Ingredients: First things first, get all your ingredients out and measure 'em up. Trust me, it makes the whole process so much smoother. Preheat your oven to a cozy 375°F (190°C) and line two large baking sheets with parchment paper. This helps prevent sticking and makes cleanup a breeze!
2. Cream the Butter and Sugar: In a large mixing bowl, or the bowl of your stand mixer fitted with the paddle attachment, combine your softened unsalted butter and granulated sugar. Beat them together on medium speed until the mixture is light, fluffy, and pale in color, usually about 2-3 minutes. This step is crucial for incorporating air and giving your cookies that delightful texture.
3. Add Egg and Vanilla: Scrape down the sides of the bowl with a rubber spatula. Crack in your large egg and pour in the vanilla extract. Beat again on medium speed until just combined. Be careful not to overmix here, as it can make the cookies tough.
4. Combine Dry Ingredients: In a separate, medium-sized bowl, whisk together your all-purpose flour, baking powder, and salt. Make sure these are thoroughly mixed; you don't want a pocket of salt in one cookie!
5. Gradually Add Dry to Wet: With the mixer on low speed, slowly add the dry ingredients to the wet ingredients, a third at a time. Mix only until just combined and a soft dough forms. It's okay if there are still a few streaks of flour; overmixing develops gluten too much, leading to hard cookies.
6. Chill the Dough (Crucial Step!): Form the dough into a flat disc, wrap it tightly in plastic wrap, and pop it into the refrigerator for at least 30 minutes. An hour is even better! This chilling time prevents the cookies from spreading too much in the oven, helping them keep their lovely star shape. Don't skip this, seriously.
7. Roll Out the Dough: Once chilled, remove the dough from the fridge. Lightly flour your work surface and your rolling pin. Roll out the dough to about a 1/4-inch thickness. You want it even so the cookies bake uniformly. If the dough gets too warm and sticky, don't hesitate to pop it back in the fridge for 10-15 minutes.
8. Cut Your Stars: Dip your star-shaped cookie cutters in a little flour to prevent sticking, then press them firmly into the rolled-out dough. Wiggle them slightly to ensure a clean cut. Carefully transfer the cut-out stars to your prepared baking sheets, leaving about an inch between each cookie. Re-roll any dough scraps until all dough is used.
9. Bake to Perfection: Place the baking sheets in your preheated oven. Bake for 8-10 minutes, or until the edges are lightly golden. The centers might still look a little soft, but they'll firm up as they cool. Don't let them get too brown, or they'll lose that tender chew!
10. Cool Down: Let the cookies cool on the baking sheets for about 5 minutes before carefully transferring them to a wire rack to cool completely. They must be entirely cool before glazing, otherwise, your beautiful glaze will melt right off!
11. Prepare the Glaze Base: In a medium bowl, whisk together the powdered sugar, milk, and vanilla extract until smooth. You're aiming for a consistency that's thick enough to coat a spoon but still pourable. If it's too thick, add more milk, a tiny drop at a time. Too thin? Add a little more powdered sugar.
12. Divide and Color the Glaze: Divide the glaze into several small bowls (one for each color you want to use). Add a tiny drop of gel food coloring to each bowl and mix well until you achieve your desired vibrant shades. Remember, a little gel goes a long way!
13. Glaze Your Stars: Now for the fun part! You can either dip the top of each cookie into the glaze, spread it with a small offset spatula or spoon, or use squeeze bottles/piping bags for more detailed designs. Get creative!
14. Let the Glaze Set: Place the glazed cookies back on the wire rack and let the glaze set completely. This can take anywhere from 1 to 4 hours, depending on humidity and glaze thickness. Once set, they’re ready to enjoy or store!