Easy Peanut Butter Marshmallow Squares

These classic Butterscotch Peanut Butter Butterscotch Marshmallow Squares are one of my favourite nostalgic childhood treats. Creamy peanut butter and butterscotch chips mixed in with rainbow coloured marshmallows are truly a match made in heaven!

These No Bake Peanut Butter Marshmallow Squares are from my repertoire of my Grandma Yvette’s recipes, she was the baking and cooking queen! Having treats ready for company at any time was really common in my grandma’s house. 

If you stopped by there would always be a fresh batch of her famous Chocolate Chip Cookies, her mouth watering Gluten Free Lemon Poppyseed Muffins, her amazing 5 Ingredient Peanut Butter Balls or her Peanut Butter Butterscotch Marshmallow Squares!

I’m actually not the biggest fan of butterscotch. But when it comes to these bars, I AM OBSESSED.

I’m convinced it has something to do with the salt in the peanut butter, which makes the butterscotch less sweet and butterscotch-y. Instead all I taste is creamy, marshmallow goodness!

This recipe goes by a lot of different names. Peanut butter marshmallow bars, confetti squares, no bake goodie bars, etc.

Whatever you choose to call them, they are extremely popular to make for the holidays!

Ingredients for the Easy No Bake Squares

Peanut Butter (Creamy or Crunchy) – for this recipe my grandmother used to always use creamy peanut butter. Whether you are using natural peanut butter, unsalted peanut butter, crunchy peanut butter, organic peanut butter or good old fashioned jif peanut butter. 

Butterscotch Chips – I typically use the Chipits butterscotch chips. There are lower sugar options like Lilys butterscotch candies, and I’m sure you could also find vegan butterscotch chips as well! Some individuals who have tested out this recipe have also substituted some of the butterscotch chips for regular chocolate chips to cut down the sweetness. 

Butter – my grandmother always used regular old fashioned butter. You could try this recipe using vegan butter as well if you like or if you’re sensitive to dairy. 

Rainbow Coloured Miniature Marshmallows – colored marshmallows recipes have to be the best recipes around. You are more than welcome to use regular mini white marshmallows for this recipe, but it might not be as fun! Fun fact – sometimes I wonder how many mini marshmallows are in a bag.

Vanilla – vanilla extract, because it just adds a little something something to marshmallow dessert recipes!

Kitchen Tools Required

• Large pot – my favorite is the Our Place Perfect Pot in color “steam.
• Rubber spatula
• 8×8 baking pan
• Parchment paper

How To Make

1. In a large pot over medium-low heat, combine the butterscotch chips, peanut butter and butter. Stir frequently until the mixture is completely melted.
2. Let cool, and fold in marshmallows and vanilla quickly. I like to throw my marshmallows in the freezer for 10 minutes before this step to prevent them from melting all together.
3. Pour the mixture into a lined 8×8 or 9×9 inch pan and spread evenly. Refrigerate for 1 hour minimum to set, then cut into bars. Store in refrigerator or freezer (I actually prefer mine straight from the freezer).

Tips for the Best Butterscotch Peanut Butter Marshmallow Squares

Typically before I start making the recipe I throw the bag of marshmallows in the freezer. This way the marshmallows don’t melt when the peanut butter mixture is still slightly warm and hits them.

Not only does refrigerating them help them firm up faster so you can eat them faster, but these squares taste way better cold. The creamy peanut butter base with the cold marshmallows is just a match made in heaven!

Believe it or not, these are even BETTER when they are frozen.

I like using crunchy peanut butter for this recipe because it gives the bars a nice crunch. Also ensure to use a tasty peanut butter, preferably a salted one for this recipe!

The combo of the salt from the peanut butter and sweetness from the butterscotch chips is amazing.

It’s a quick recipe that comes together within 5 minutes and probably takes about an hour to set before you can cut them into bars. But you can speed up the cooling time by sticking the bars in the fridge!

Or if you live in a cold climate like me, stick them outside or on your porch, which acts as a second fridge all winter season.

Other Delicious Easy Treats You May Want To Try!

• 3 Ingredient Funfetti Cake Pops
• Chocolate Peanut Butter Crunch Bites
• 5 Ingredient Easy Biscoff Cheesecake
• Chocolate Caramel Shortbread Millionaire Bars
• Christmas Cookie Fudge Recipe
• Easy Chocolate Peppermint Truffles
• Gluten Free Chocolate Fudge Crinkle Cookies

Note: This post may contain affiliate links, so you can conveniently find the ingredients you need to make the peanut butter confetti squares.