Sprinkle-flecked vanilla sugar cookies paired around soft birthday-style buttercream.
The feature to preserve is the shaping: Cut 48 small 2-inch rounds from ¼-inch chilled dough. Space 1½ inches apart and pair similarly sized cookies after cooling. Each pair makes one sandwich.
Before mixing, measure without packing the flour. Use long jimmies sprinkles and fold only until distributed. Tiny nonpareils can bleed during mixing; reserve those for optional decoration.
Use the observable baking cues as well as the timer. Beat filling butter smooth, add confectioners’ sugar, then milk and vanilla, and whip creamy. Divide between 24 cookie bottoms, about 2 teaspoons each, and cover with the matching tops. Let the filling settle before packing.
Funfetti Sugar Cookie Sandwiches
Per tray: 8–10 minutes · 2 batches, about 12 pieces per 13 × 18-inch half-sheet pan.
Allow about 145 minutes: 35 hands-on, 60 required chilling, 20 baking all batches sequentially, 30 cooling including pan rest, and 0 finishing/set time. Preheat during preparation or final chilling. Extra trays and optional decoration add time.
Kitchen tools you’ll need
- US measuring cups and spoons or kitchen scale
- Mixing bowl and silicone spatula
- Electric hand mixer
- 13 × 18-inch baking sheets
- Parchment paper
- Cooling rack
- Rolling pin with ¼-inch guides
- 2½–3-inch cookie cutters
- Thin cookie spatula
- 2-inch round cutter
- Small piping bag or offset spatula
Sprinkle-flecked vanilla sugar cookies paired around soft birthday-style buttercream.
Ingredients
Scale ingredients and US equivalents, including eggs; weigh beaten egg for fractional batches. Keep piece size, thickness, oven temperature and baking time per tray unchanged. Extra trays increase whole-batch time.
Cookie dough
Vanilla filling
Instructions
Mixing
- Make the doughCream butter and sugar until smooth. Beat in egg and vanilla. Whisk flour, baking powder and salt separately, then add on low speed just until the dough is cohesive. Fold sprinkles into the finished dough briefly.
Thermal management
- Prepare for shapingRoll the freshly mixed dough between lightly floured parchment sheets to ¼ inch thick, cover and refrigerate until firm for the stated chilling time. Keep the second slab refrigerated while cutting the first.
Shaping
- Shape the batchCut 48 small 2-inch rounds from ¼-inch chilled dough. Space 1½ inches apart and pair similarly sized cookies after cooling. Each pair makes one sandwich.
Baking
- Bake to the right texturePreheat to 350°F (175°C). Bake on the center rack for 8–10 minutes. Edges should be set and only lightly colored; centers must lose their wet sheen. Use cool pans for subsequent trays.
Cooling
- Cool before servingRest on the pan for 5 minutes, then transfer to a rack and cool completely, about 30 minutes total, before frosting.
Finishing
- Add the finishBeat filling butter smooth, add confectioners’ sugar, then milk and vanilla, and whip creamy. Divide between 24 cookie bottoms, about 2 teaspoons each, and cover with the matching tops. Let the filling settle before packing.
Chef’s Science & Pro Tips
Fold sprinkles briefly
Use long jimmies sprinkles and fold only until distributed. Tiny nonpareils can bleed during mixing; reserve those for optional decoration.
Shape with purpose
Cut 48 small 2-inch rounds from ¼-inch chilled dough. Space 1½ inches apart and pair similarly sized cookies after cooling. Each pair makes one sandwich. Bake similar-sized pieces together.
Serving and texture
Sprinkle-flecked vanilla sugar cookies paired around soft birthday-style buttercream. Let the crumb cool fully before judging texture; pack only once the finish has set.
Storage & Make-Ahead
| Method | How long | What to do |
|---|---|---|
| Room temperature | Up to 1 day in a cool room | Keep covered; refrigerate promptly if the room is warm. |
| Refrigeration | Up to 4 days | Refrigerate frosted cookies airtight; let only the serving portion soften briefly. |
| Freeze raw | Up to 2 months | Freeze the unbaked small rounds flat, then bag. Bake from frozen with extra time as needed. Make the buttercream when assembling. |
| Freeze baked | Up to 2 months | Freeze plain baked cookies up to 2 months; thaw sealed and frost after thawing. |
| Restore | 30–60 minutes | Thaw plain cookies in their sealed container, then finish. Do not oven-warm frosted cookies. |
Notes
- US measures are shown first; gram weights help avoid packed flour. Spice weights are approximate: use measuring spoons for small quantities. Egg weights exclude shells. Temperatures are for a conventional oven.
Nutrition
Approximate nutrition per serving calculated from ingredient weights divided by 24; required fillings and toppings included, optional decorations excluded. Brands, unused coating and actual serving size affect the estimate.
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Frequently Asked Questions
A few helpful answers before you bake.
Why did the dough turn one gray color?
Use long jimmies sprinkles and fold only until distributed. Tiny nonpareils can bleed during mixing; reserve those for optional decoration.
What makes funfetti sugar cookie sandwiches different?
Sprinkle-flecked vanilla sugar cookies paired around soft birthday-style buttercream. Fold sprinkles briefly. Follow the specified technique rather than substituting the shaping method from a different sugar-cookie recipe.
Can I make funfetti sugar cookie sandwiches ahead?
Prepare with the storage instructions below. Complete the required finish after the base has cooled. Beat filling butter smooth, add confectioners’ sugar, then milk and vanilla, and whip creamy. Divide between 24 cookie bottoms, about 2 teaspoons each, and cover with the matching tops. Let the filling settle before packing.
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