Ingredients

Equipment Needed

• •9x13 inch quarter sheet pan
• •Stand mixer or hand mixer
• •Offset spatula
• •Parchment paper
• •Wooden serving board or large platter

Instructions

1. 1

   Cream butter and sugar

   In a large bowl or stand mixer fitted with the paddle attachment, beat 1 3/4 cups (3 1/2 sticks) of the softened butter with the powdered sugar on medium speed until pale and fluffy, about 3 minutes. Scrape down the sides of the bowl. The mixture should look like thick frosting, with no visible butter chunks. Add the vanilla and fine sea salt, beating until incorporated.

   Butter that's too cold will leave lumps. Too warm and it will be greasy. Press your finger into it: there should be an indent but no oil on your fingertip.
2. 2

   Add flour gradually

   With the mixer on low speed, add the flour in three additions, mixing just until each portion disappears. Stop the moment the dough comes together in a shaggy mass. Overworking develops gluten, which turns tender shortbread into tough crackers. The dough will look slightly crumbly but should hold together when pressed.

3. 3

   Press into pan

   Line a quarter sheet pan (9x13 inches) with parchment paper, leaving overhang on two sides for easy lifting. Transfer the dough to the pan and press it into an even layer using your hands or the bottom of a measuring cup. Take your time here. Aim for consistent thickness, especially in the corners, or your edges will overbake while the center stays pale. Use a fork to dock the entire surface with holes spaced about an inch apart. This prevents dramatic puffing.

   Lightly flour your hands if the dough sticks. Cold hands help too.
4. 4

   Chill the dough

   Refrigerate the pan for at least 30 minutes, or up to overnight. This step is essential. Cold dough holds its shape in the oven and produces cleaner edges. Skip it and you'll have a spreading, bubbling mess that's still delicious but lacks the visual impact this cookie demands.

5. 5

   Bake until golden

   Preheat your oven to 325°F. Position a rack in the center. Bake the chilled shortbread for 22 to 28 minutes, rotating the pan halfway through. You're looking for edges that have turned golden brown and a center that's set but still pale. The surface should look matte, not shiny. Don't wait for the whole thing to brown; it will firm as it cools.

   Every oven lies. Trust your eyes over the timer. Golden edges with a pale center is correct.
6. 6

   Apply the butter topping

   Remove from oven and let cool for exactly 5 minutes. You want the shortbread warm enough to melt butter but not so hot that everything slides off. Cut the remaining 1/4 cup (half stick) butter into thin slices and distribute them across the surface. Let sit for 1 minute, then use an offset spatula or the back of a spoon to spread the melting butter into a thin, even layer. It will soak into the warm shortbread, creating pockets of extra richness.

7. 7

   Add toppings

   Working quickly while the butter is still tacky, drizzle the honey across the surface in long, artistic strokes. Scatter the rainbow sprinkles evenly. Finish with a generous pinch of flaky salt, crushing the flakes slightly between your fingers as they fall. If using, add the mini chocolate chips and crushed freeze-dried raspberries now. The toppings should stick to the butter; if they're sliding off, the surface has cooled too much.

8. 8

   Cool and serve

   Let the shortbread cool in the pan for at least 20 minutes before attempting to move it. Use the parchment overhang to lift the entire slab onto a wooden cutting board or serving platter. Cut into rough squares or rectangles using a sharp knife, or present the whole board and let guests break off their own pieces. This is communal food. Encourage people to get their hands in.

Chef Tips

• •European-style butter with higher fat content produces an even more tender result. Kerrygold or Plugrá are widely available options.
• •For a salted caramel variation, drizzle store-bought dulce de leche instead of honey and add chopped roasted pecans.
• •The topping possibilities are endless: crushed pretzels for crunch, mini M&Ms for kids' parties, lavender honey with bee pollen for something elegant. Let the occasion guide you.
• •If you want to serve this at a party, bake the shortbread base up to two days ahead and store at room temperature, tightly wrapped. Add the butter and toppings just before serving for maximum visual impact.
• •A wooden board presentation is part of the appeal, but any large platter works. The goal is communal eating, not authenticity to a TikTok video.

Advance Preparation

• •Shortbread dough can be pressed into the pan and refrigerated for up to 2 days before baking.
• •Baked shortbread base (without toppings) keeps at room temperature, tightly wrapped, for 3 days.
• •Fully topped butter board cookies are best served within 4 hours. The honey will absorb into the shortbread over time, which is delicious but less visually dramatic.
• •Do not freeze with toppings. Freeze the baked base only, wrapped tightly, for up to 1 month. Thaw at room temperature and add toppings fresh.

Frequently Asked Questions

Nutrition Information

1 serving (about 28g)