No Bake Peanut Butter Marshmallow Squares / Confetti Bars are from my repertoire of my Grandma Marion’s recipes,  as she was an avid fan of  “dainties”.

Peanut Butter Marshmallow Squares / Confetti Bars
Peanut Butter Marshmallow Squares / Confetti Bars

Marshmallow Bars

These are also squares, as most people would call them, but I prefer the word dainties instead, not only because it brings forth very fond memories of my grandma who has sadly no longer with us, but because it also evokes a feeling of times gone by, in which you always had a supply of dainties ready in the freezer in case your neighbor stopped by. Having treats ready for company at any time was really common in my grandma’s rural area;  if you stopped by, there would be a cup of coffee and a plate of squares produced for your chat in less than 10 minutes.

No Bake Peanut Butter Marshmallow Squares AKA Confetti Bars from @kitchenmagpie

Oh colored marshmallows, how I love thee. Especially the large ones roasted over a campfire, which reminds me, those large colored marshmallows are darn hard to find! This recipe uses just over half of a large bag of the mini variety rainbow marshmallows. When then leaves just under half a bag of colored mini-marshmallows for snackin’. Gotta love a recipe that pulls double duty!

No Bake Peanut Butter Marshmallow Squares AKA Confetti Bars from @kitchenmagpie

No bake peanut butter marshmallow squares are probably my favourite square on earth and they totally made it into my cookbook even! Now, the cookbook has a NEW version of these bars as well that you will totally have to check out as well.

Those are super deadly and delicious as well! For now though, this recipe is still a winner and my favourite.

No Bake Peanut Butter Marshmallow Squares AKA Confetti Bars from @kitchenmagpie

The really important question is: are you a butterscotch or chocolate lover when it comes to these bars? You can make both versions easily,my Grandma always had both but I do believe that these butterscotch ones disappeared faster than the chocolate ones did.

And if you can believe it, these are even BETTER when they are frozen!

Happy baking everyone!




No Bake Peanut Butter Marshmallow Squares are an old fashioned favourite!


5 from 4 votes
Peanut Butter Marshmallow Squares / Confetti Bars
Prep Time
5 mins
Cook Time
5 mins
Total Time
10 mins
No Bake Peanut Butter Marshmallow Squares are an old fashioned favourite!
Course: Dessert
Cuisine: American
Keyword: peanut butter marshmallow squares
Servings: 30
Calories: 120 kcal
Author: Karlynn Johnston
  • 1/2 cup butter
  • 1 cup peanut butter you can use crunchy if it's your favourite!
  • 1 package butterscotch chips or chocolate chips
  • 1/2 tsp vanilla
  • 8 cups coloured marshmallows
  1. Line a 9x13 pan with parchment paper and set aside.
  2. Place the butter, peanut butter and baking chips into a large saucepan. Heat over low-medium heat until melted and smooth, stirring frequently.
  3. Remove from the heat and stir in the vanilla.
  4. Cool until you can safely touch the bottom of the pot, then stir in the marshmallows.
  5. Spread out evenly in the prepared pan. Cool completely and let set, then slice and serve.
  6. These freeze well and even taste better frozen!

Recipe Video

Recipe Notes

Nutritional values may vary depending on brands of ingredients used.

Nutrition Facts
Peanut Butter Marshmallow Squares / Confetti Bars
Amount Per Serving (1 bar)
Calories 120 Calories from Fat 63
% Daily Value*
Total Fat 7g 11%
Saturated Fat 2g 10%
Cholesterol 8mg 3%
Sodium 77mg 3%
Potassium 55mg 2%
Total Carbohydrates 12g 4%
Sugars 8g
Protein 2g 4%
Vitamin A 1.9%
Calcium 0.5%
Iron 1.1%
* Percent Daily Values are based on a 2000 calorie diet.

Hey guys, I'm Karlynn! Welcome to The Kitchen Magpie, my website full of family friendly recipes, cocktails & homesteading tales of chickens & cows from the family farm! Make sure to check out my bestselling cookbook, Flapper Pie & a Blue Prairie Sky ,stay tuned for info on my second cookbook!


  1. Pingback: a peek inside the fishbowl » Blog Archive Confetti squares... a holiday snack or any day snack for anyone with a sweet tooth? - a peek inside the fishbowl

  2. Nancy Magliery Reply

    Can something be substituted for the butter? Looking to make something for a lactose intolerant child.

    • Michelle Boyle Reply

      I saw someone make a version of these with coconut oil instead of butter.

  3. These are my reason for living. They’ve gotten me through some hard times.

  4. Pingback: Marshmallow Yule Log (Church Windows, Stained Glass) - The Kitchen Magpie

  5. Pingback: Butter Tart Bars - The Kitchen Magpie

  6. Corene Hawley Reply

    Always a hit. The first recipe i made from your cookbook.

  7. Kristina Craig Reply

    I make these with Sunbutter instead of peanut butter so my daughter can have them too!

  8. Dana Maxine Yandt Reply

    Those always gave me insomnia. I had to wake up 2 or 3 times in the night to nibble on a piece.

  9. Lorraine @ Not Quite Nigella Reply

    They look absolutely delicious and colourful too! 🙂

  10. I love these bars.  My grandmother always made them with butterscotch chips for me for my birthday.  

Write A Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.