St. Patricks Rainbow Bars (Printable)

Buttery bars with white chocolate and vibrant rainbow sprinkles, perfect for a festive celebration.

# What You Need:

→ Dry Ingredients

01 - 2 cups all-purpose flour
02 - 1/2 teaspoon baking powder
03 - 1/4 teaspoon salt

→ Wet Ingredients

04 - 3/4 cup unsalted butter, melted and cooled
05 - 1 cup granulated sugar
06 - 1/2 cup light brown sugar, packed
07 - 2 large eggs
08 - 2 teaspoons pure vanilla extract

→ Mix-Ins

09 - 3/4 cup white chocolate chips
10 - 1/2 cup rainbow sprinkles, divided

# Directions:

01 - Preheat oven to 350°F. Line a 9x9-inch baking pan with parchment paper, leaving overhang for easy removal.
02 - In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
03 - In a large bowl, whisk melted butter, granulated sugar, and brown sugar until smooth. Add eggs and vanilla extract; whisk until fully combined.
04 - Gradually fold the dry ingredients into the wet ingredients with a spatula, mixing until just combined.
05 - Stir in the white chocolate chips and 1/3 cup of the rainbow sprinkles.
06 - Spread the batter evenly into the prepared pan. Sprinkle remaining sprinkles over the top.
07 - Bake 25-28 minutes, or until the edges are golden and a toothpick inserted into the center comes out mostly clean.
08 - Cool completely in the pan on a wire rack before slicing into bars.

# Expert Advice:

01 -
  • Quick and easy preparation in just 45 minutes from start to finish
  • Perfect for St. Patrick's Day celebrations with festive rainbow colors
  • One-pan baking means minimal cleanup and maximum convenience
  • Buttery, chewy texture with delightful white chocolate and sprinkle surprises
  • Kid-friendly recipe that's fun to make and even more fun to eat
  • Easily customizable with different chocolate chips or sprinkle colors
02 -
  • Use room temperature eggs for better incorporation into the batter
  • Let the melted butter cool for 5-10 minutes to prevent scrambling the eggs
  • Don't skip lining the pan with parchment paper—it makes removal and cutting much easier
  • For even baking, rotate the pan halfway through the baking time
  • Test for doneness a minute or two early—slightly underbaked is better than overbaked
  • Cool completely before cutting for the cleanest slices and best texture
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