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Flavorful Firework Cookie Sandwiches Recipe with Easy Vanilla Buttercream Filling

Flavorful Firework Cookie Sandwiches - featured image
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These colorful cookie sandwiches feature crisp, buttery sugar cookies filled with a creamy vanilla buttercream, creating a fun and nostalgic treat perfect for parties or everyday indulgence.

Ingredients

Scale
  • 1 cup (225g) unsalted butter, softened
  • 1 cup (200g) granulated sugar
  • 1 large egg, room temperature
  • 1 teaspoon pure vanilla extract
  • 2 ½ cups (315g) all-purpose flour
  • ½ teaspoon baking powder
  • ¼ teaspoon salt
  • ½ cup rainbow nonpareils or sprinkles
  • ½ cup (115g) unsalted butter, softened (for buttercream)
  • 1 ¾ cups (220g) powdered sugar, sifted
  • 1 ½ teaspoons pure vanilla extract (for buttercream)
  • 2 tablespoons heavy cream or whole milk
  • Pinch of salt (for buttercream)

Instructions

  1. Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper or silicone mats.
  2. Cream the butter and sugar: In a mixing bowl, beat 1 cup softened butter and 1 cup granulated sugar on medium speed until light and fluffy, about 3-4 minutes.
  3. Add the egg and vanilla: Beat in the large egg and 1 teaspoon vanilla extract until fully combined.
  4. Mix dry ingredients: In a separate bowl, whisk together 2 ½ cups all-purpose flour, ½ teaspoon baking powder, and ¼ teaspoon salt.
  5. Combine wet and dry: Gradually add the dry ingredients to the wet mixture on low speed, mixing just until combined.
  6. Fold in sprinkles: Gently fold in ½ cup rainbow nonpareils with a spatula.
  7. Scoop the dough: Using a cookie scoop or spoon, drop rounded tablespoons of dough about 2 inches apart on the prepared baking sheets.
  8. Bake for 10-12 minutes or until the edges just start turning golden.
  9. Cool: Let cookies cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.
  10. Prepare the buttercream: Beat ½ cup softened butter on medium speed until creamy (about 2 minutes). Slowly add 1 ¾ cups sifted powdered sugar, mixing on low.
  11. Add vanilla, cream, and salt: Stir in 1 ½ teaspoons vanilla, 2 tablespoons cream, and a pinch of salt. Beat on medium-high for 2-3 minutes until light and fluffy.
  12. Assemble cookie sandwiches: Spread or pipe about 1 tablespoon of vanilla buttercream onto the flat side of one cookie, then top with a second cookie, pressing gently.
  13. Chill and serve: Place assembled sandwiches in the fridge for 15-20 minutes to set the buttercream before serving.

Notes

Use room temperature butter and eggs for best texture. Do not overmix the dough to avoid tough cookies. Cool cookies completely before sandwiching to prevent melting the buttercream. Store sandwiches in an airtight container in the refrigerator for up to a week or freeze individually for longer storage.

Nutrition

Keywords: cookie sandwiches, vanilla buttercream, sugar cookies, sprinkles, easy dessert, party treats, colorful cookies

Find it online: https://shimmersnack.com/flavorful-firework-cookie-sandwiches-recipe-with-easy-vanilla-buttercream-filling/