Make the Cookie Dough
Whisk flour, baking powder, and salt in a bowl; set aside.
Beat softened butter and sugar together until light and fluffy, about 2–3 minutes.
Add egg, vanilla, and almond extract (if using); mix until combined.
Add dry ingredients gradually; mix on low until a smooth dough forms. Add milk only if the dough feels crumbly.
Divide dough into two discs; wrap each in plastic wrap. Refrigerate at least 1 hour (up to overnight).
Cut and Bake
Preheat oven to 375°F (190°C). Line baking sheets with parchment paper.
On a lightly floured surface, roll chilled dough to ¼-inch thickness.
Cut into spring shapes (flowers, eggs, butterflies, circles). Place 1 inch apart on prepared baking sheet.
Bake 10–12 minutes until edges are just barely golden — centers should look set but pale.
Cool on the baking sheet 5 minutes, then transfer to a wire rack. Cool completely before icing.
Make the Royal Icing (Option A)
Beat meringue powder and warm water in a large bowl until foamy.
Add sifted powdered sugar; beat on medium-high until stiff, glossy peaks form, about 5–7 minutes.
Divide into small bowls. Add a tiny speck of gel food coloring to each with a toothpick; stir until you reach soft pastel shades. Add water a few drops at a time to thin for flooding; keep it thicker for outlines.
Make the Easy Glaze (Option B)
Whisk sifted powdered sugar, milk, corn syrup, and vanilla together until smooth and pourable.
Divide into small bowls; tint each with a tiny speck of gel food coloring for pastel shades.
Decorate the Cookies
Fill a piping bag fitted with a small round tip (size 1–3) with outline-consistency icing. Pipe a border around each cookie.
Thin the remaining icing slightly and use a squeeze bottle or piping bag to flood the inside of the border. Use a toothpick or scribe tool to guide icing into corners and pop air bubbles.
Add wet-on-wet designs (dots, swirls, marbling) while the base layer is still wet.
Let iced cookies dry completely at room temperature — at least 4–6 hours for royal icing, or 1–2 hours for glaze.
Pastel Color Mixing Guide
Baby Pink: White icing + tiny speck of red or pink gel
Sky Blue: White icing + tiny speck of blue gel
Mint Green: White icing + tiny speck of green gel (or blue + yellow)
Pale Yellow: White icing + tiny speck of yellow gel
Lavender: White icing + tiny speck of purple gel (or red + blue)
Always start with less than you think you need — gel colors are very concentrated. Add more one toothpick dip at a time.