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Firework Funfetti Cookie Bars with Vanilla Glaze

firework funfetti cookie bars - featured image
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These easy and colorful cookie bars feature a buttery base with rainbow sprinkles and a smooth homemade vanilla glaze, perfect for celebrations and everyday treats.

Ingredients

Scale
  • 1 cup (227 g) unsalted butter, softened
  • 3/4 cup (150 g) granulated sugar
  • 1/2 cup (100 g) packed brown sugar
  • 2 large eggs, room temperature
  • 2 teaspoons pure vanilla extract
  • 2 1/2 cups (315 g) all-purpose flour
  • 1 teaspoon baking powder
  • 1/2 teaspoon salt
  • 3/4 cup (120 g) rainbow sprinkles
  • For the Vanilla Glaze:
  • 1 cup (120 g) powdered sugar, sifted
  • 2–3 tablespoons (30–45 ml) milk (whole milk preferred, almond milk optional)
  • 1 teaspoon pure vanilla extract
  • Pinch of salt

Instructions

  1. Preheat the oven to 350°F (175°C). Grease a 9×13 inch pan or line it with parchment paper.
  2. In a large bowl, cream together 1 cup softened unsalted butter, 3/4 cup granulated sugar, and 1/2 cup packed brown sugar until light and fluffy, about 3-4 minutes.
  3. Beat in 2 large room-temperature eggs one at a time, mixing well after each addition. Stir in 2 teaspoons pure vanilla extract.
  4. In a separate bowl, whisk together 2 1/2 cups all-purpose flour, 1 teaspoon baking powder, and 1/2 teaspoon salt.
  5. Gradually add the dry ingredients to the wet mixture, folding gently or mixing on low speed until just combined. Avoid overmixing.
  6. Gently fold in 3/4 cup rainbow sprinkles, being careful not to overfold to prevent color bleeding.
  7. Pour the batter evenly into the prepared pan and smooth the top with a spatula.
  8. Bake for 25-30 minutes, or until edges are golden and a toothpick inserted in the center comes out with a few moist crumbs.
  9. Cool the bars completely in the pan on a wire rack for at least 20 minutes.
  10. To make the vanilla glaze, whisk together 1 cup sifted powdered sugar, 2-3 tablespoons milk, 1 teaspoon vanilla extract, and a pinch of salt until smooth and pourable.
  11. Drizzle the glaze over the cooled bars and let it set for 10-15 minutes.
  12. Slice into squares or rectangles with a sharp knife, wiping the knife between cuts for cleaner slices.

Notes

Use softened butter for best texture. Avoid overmixing the batter to keep bars tender. Use jimmies or non-melting sprinkles to prevent color bleeding. Let bars cool completely before glazing to avoid glaze meltdown. Sift powdered sugar for a smooth glaze. For gluten-free, substitute flour with a 1:1 gluten-free blend and let batter rest 10 minutes before baking. For dairy-free, use coconut oil instead of butter and non-dairy milk in glaze.

Nutrition

Keywords: funfetti cookie bars, vanilla glaze, sprinkle cookie bars, easy dessert, colorful cookie bars, homemade treats, party dessert

Find it online: https://sofiaspice.com/firework-funfetti-cookie-bars-recipe-easy-homemade-vanilla-glaze-treats/