Ingredients:

  • 1 cup unsalted butter, softened (227 g)
  • 1 cup granulated sugar (200 g)
  • 2 large eggs
  • 1 teaspoon vanilla extract (5 ml)
  • 2 cups all-purpose flour (250 g)
  • 1 teaspoon baking powder (5 g)
  • ¼ teaspoon salt (1 g)
  • 1 cup rainbow sprinkles (160 g)
  • Food coloring (various colors such as pink, blue, yellow, and green)
  • 1 cup cream cheese frosting (240 g; store-bought or homemade)
  • Extra sprinkles for garnish

Instructions:

  1. Preheat your oven to 350°F (175°C).
  2. Grease a 9x13 inch baking pan with non-stick spray or line with parchment paper.
  3. In a bowl, cream together the softened butter and granulated sugar until light and fluffy.
  4. Add eggs and vanilla extract, mixing until fully incorporated.
  5. In a separate bowl, whisk together the flour, baking powder, and salt.
  6. Gradually add the dry mixture to the wet ingredients, blending until just combined.
  7. Divide the dough into separate bowls for each color you wish to create.
  8. Add a few drops of food coloring to each dough portion, stirring until the color is vivid and even.
  9. Starting with one color, spread an even layer of dough in the prepared pan.
  10. Alternate layers with different colors until all the dough is used.
  11. Press the rainbow sprinkles into the top layer gently.
  12. Bake in the preheated oven for 25-30 minutes or until the edges are golden and a toothpick inserted in the center comes out clean.
  13. Allow the bars to cool in the pan for 30 minutes before transferring to a wire rack to cool completely.
  14. Once cool, top with cream cheese frosting and additional sprinkles if desired.
  15. Cut into squares or bars and serve.