Lego Brownies

June 21, 2026

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Lego brownies that decorated to look like lego bricks

These Lego Brownies are a fun and colorful dessert that combines rich, fudgy brownies with a playful Lego-inspired design. They are topped with vibrant frosting and M&Ms to mimic Lego bricks. They’re the perfect Lego dessert for Lego birthday parties or for weekend treats for Lego lovers.

Lego brownies that decorated to look like lego bricks

And, if you’re looking for more Lego desserts, try these Lego rice krispie treats! They both make the perfect dessert board for Lego parties!

Lego Books For Kids

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ingredients for the lego brownies- Chocolate Cosmic brownies with the sprinkles removed on a white plate beside a bowl of creamy frosting and a small dish of colorful M&M candies on a marble surface.

What You’ll Need For These Lego Brownies

  • Little Debbie Brownies
  • 1 cup white frosting
  • Blue, green, and yellow food coloring
  • Blue, green, and yellow M&Ms – 24 of each color 6 per brownie)

How To Make Lego Brownies

1. Line a baking sheet or tray with parchment paper.

2. Unwrap the brownies. If you can only find brownies with candy bits on them, take them off.

3. Divide the frosting between three small bowls. Add a different color food coloring to each bow. (I did 4 yellow, 2 blue, and 10 green to make the colors best match)

bowls of frosting with drops of food coloring in each for this lego dessert

4. Spread the different colors of frosting on the brownies.

Three rectangular brownies with bright blue frosting arranged in a row on parchment in a metal baking tray

5. Top the brownies with 6 of the same color M&Ms. You may start in the middle, to make it easier to get the candies even.

Top-down view of a metal baking tray with three blue-frosted brownies with blue M&Ms and a white bowl of colorful candy-coated chocolates.

6. Arrange on the parchment lined tray, then chill for 30 minutes to help the frosting set a bit.

    Important Recipe Notes

    Assorted square brownies with bright blue, yellow, and green icing and matching round candies on parchment.

    I used Little Debbie Cosmic Brownies with the sprinkles removed for these Lego brownies. You can use any brownie you prefer or make your own from a box.

    I stuck to three colors to make the brownies easier, but you can do any color brownie that you have matching M&Ms for. This will create more variety, but will take a bit longer and require more food coloring.

    Since this recipe is so easy to put together, you can have kids help make them! Lay out all the ingredients (with the ice pre-mixed) and let kids create their own Lego brownies!

    Kid-Friendly Desserts

    Walking Banana Pudding– This walking banana pudding recipe is a low-mess summer dessert in a bag! Made with mini wafer snack bags, vanilla pudding, and bananas, this pudding recipe is the perfect summer snack for kids.

    Dinosaur Dirt Cups-Take a regular chocolate pudding cup and elevate it by turning it into a dirt cup topped with dinosaurs and dino eggs. It is a fun themed snack that is so easy to put together.

    Print

    Lego Brownies

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    These LEGO brownies are the most fun and creative treat for kids! Easy to make and perfect for LEGO birthday parties and after school snacks.

    • Author: stacie
    • Prep Time: 10
    • Total Time: 10
    • Category: Dessert
    • Method: Assembly
    • Cuisine: American

    Ingredients

     

          Little Debbie Brownies

          1 cup white frosting

          Blue, green, and yellow food coloring

          Blue, green, and yellow M&Ms – 24 of each color 6 per brownie)

    Instructions

    1. Line a baking sheet or tray with parchment paper.
    2. Unwrap the brownies. If you can only find brownies with candy bits on them, take them off.
    3. Divide the frosting between three small bowls. Add a different color food coloring to each bow. (I did 4 yellow, 2 blue, and 10 green to make the colors best match)
    4. Spread one color frosting on 4 of the brownies, then top with 6 of the same color M&Ms. You may start in the middle, to make it easier to get the candies even.
    5. Arrange on the parchment lined tray, then chill for 30 minutes to help the frosting set a bit.
    author avatar
    stacie
    Stacie is a former first grade teacher who loves to share educational activities to help kids learn, grow, and develop! She has a Bachelor’s Degree in Elementary Education and a Master’s Degree in Child Development with a focus on Mental Health.

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