Lucky Charms No-Bake Rainbow Cake




Introduction: Lucky Charms No-Bake Rainbow Cake

About: Synth chick for electro-rock band, Former Human Beings

Got a box of Lucky Charms? You can make this magically delicious rainbow cake without an oven. The cereal's marshmallows act as the cake's crunchy topping, while the cereal bits make up the crust. The beautiful rainbow layered middle is a mix of marshmallows and cream cheese. You won't need to switch on the heat for this baby, which is great for those of you who are melting along with me in sunny California!

Step 1: Gather Your Materials

For this cake, you will need:


  • 1 box of Lucky Charms
  • 4 Tbsp butter
  • 2 tsp vanilla
  • 1 cup milk
  • 7 cups mini marshmallows (or regular ones torn up)
  • 16 ounces softened cream cheese
  • 1 cup half and half
  • food colouring


  • hand mixer
  • 9" springform pan

Step 2: Sort It Out

Separate marshmallows and cereal bits in 2 bowls.

Step 3: Grind Away

Add cereal to a food processor and pulse into a fine dust.

Step 4: Butter It Up

Melt the butter and add it to the cereal dust. Mix well with a spatula until it becomes crumbly.

Step 5: Make the Crust

Pat it down into the bottom of a 9 inch springform pan. Refrigerate while you continue making the marshmallow cream cheese middle.

Step 6: Melt the Marshmallows

Pour milk into a large pot over medium heat, then add marshmallows. Stir continuously until mixture is smoothed and there are no marshmallow lumps.

Step 7: Just Beat It

Beat cream cheese with hand mixer until smooth and fluffy. Beat in half and half. Fold in marshmallow mixture until well combined. Stir in vanilla.

Step 8: Make the Rainbow

Evenly separate mixture into 4 bowls. Add a drop or 2 of food colouring to each bowl so you have pink, yellow, green and blue. Continue by adding green on top of it, then yellow, then pink. Place in the freezer for 1 hour and 30 minutes. Remove from springform pan, and sprinkle with Lucky Charms marshmallows.

Step 9: Eat! Eat! Eat!

Allow to thaw a few minutes, slice, and enjoy the taste and beautiful rainbow layers!

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    22 Discussions

    This looks awesome. I will be making this for my 16th birthday which is Friday June 1st. Thanks for sharing. You definitely have my vote.

    3 replies

    Oh, excellent! I hope you have fun making it-- post your results! Happy birthday to you!

    I'll take a picture and post it later. Thanks so much.

    Not only does it look fabulous, but it was quite delicious as well!

    1 reply

    Awww thank you for trying it!!!! :) Best

    Aww! Another country sans charms. Now I know what to send my family over there. But they will probably find it kimochi warui since they're old ;)

    Oh man I wish we had lucky charms in Austria, I love rainbows and this looks so cute!

    2 replies

    Oh I wish you did too!!! I hope you can find something similar to give it a try with! :)

    Thanks! Even without them it looks very cool anyways :)

    I think I was honestly surprised how yummy it was! I've always loved to LOOK at Lucky Charms, but not really eat it. This was exceptional! :)

    What a Great idea!! Can't wait to make it myself!! You have my vote!! Good Luck!

    2 replies

    Oh, thank you so much! My very first Instructable, too!! :) Good luck to you when you make it. It's a bit tedious, but the outcome is so rewarding!

    Thank you. I look forward to making it. I will let you know how it turns out. Lucky Charms are my favorite :)

    Thank you so much! It was fun for us all to stare at it as we gobbled it down ;)

    I can't wait for you to try it!