Rainbow Brownies

Aren’t these dreamy? I can’t stop staring at the pretty colors.

And the best part? They are so, so easy.


If you need to make a treat for a get-together or a party — and want to make a big impression — try these!

Yield: About 20 brownies

Rainbow Brownies

Rainbow Brownies

A wonderful treat for a birthday party or Pride event!

Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes


  • 1 box brownie mix (plus required oil + eggs)
  • 3 tubs of vanilla icing
  • Various food colorings (choose any colors you’d like – I used Wilton gel colorings)
  • Disposable pastry bags
  • A knife or kitchen scraper


    1. Make brownies according to box directions. Let the baked brownies cool completely. Do not cut them. Remove the uncut giant brownie onto a cutting board or serving platter.

    2. Divide the icing into six bowls. Dye each bowl a different color.

    3. Snip the ends of the pastry bags – about 1/2 inch. You won’t need a pastry tip.

    4. Fill the pastry bags with the icing. Pipe stripes onto the brownies. They can be messy and totally imperfect – doesn’t matter. Just cover the slab of brownies with lines of icing.

    5. Smooth out the icing with a kitchen scraper or a knife.

    6. Cut the brownies into squares and serve. Easy squeezy!


Your yield will depend on the size of your baking pan and how big or small you cut your brownies.

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