If you have a sweet tooth and love nostalgic treats, this Peanut Butter Marshmallow Squares Recipe is going to be your new favorite indulgence. Imagine the perfect combination of creamy peanut butter, rich butterscotch, and chewy fruity marshmallows all layered into one delightfully soft and chewy square. It’s a versatile dessert that’s both comforting and vibrant, perfect for sharing with friends, packing for a lunchbox, or enjoying anytime you crave a quick yet satisfying sweet bite.
Ingredients You’ll Need
This recipe is a beautiful example of how a handful of simple ingredients come together to create magic. Each component is carefully chosen to contribute flavor, texture, and color, making these squares irresistibly delicious.
- ½ cup unsalted butter: Provides a creamy base and balances the sweetness with a rich, buttery flavor.
- 1 cup creamy peanut butter (Peter Pan brand used): Adds that unmistakable nutty richness and smooth texture that binds everything together.
- 11 ounce bag butterscotch chips (Nestle Toll House brand used): Infuses a sweet, caramel-like warmth that complements the peanut butter beautifully.
- 1 teaspoon vanilla extract: Lifts all the flavors with a subtle floral note and depth.
- 10 ounce bag fruity-flavored mini marshmallows (Jet-Puffed brand used): Brings playful color and fun bursts of fruity sweetness amidst the creaminess.
How to Make Peanut Butter Marshmallow Squares Recipe
Step 1: Prepare Your Pan
Start by lining an 8×8 straight-sided baking pan with parchment paper, making sure to leave enough overhang on the sides. Lightly spray it with non-stick baker’s spray. This simple prep step will ensure your perfectly set squares come out cleanly and look as good as they taste when you slice them later.
Step 2: Melt the Butter, Peanut Butter, and Butterscotch Chips
In a medium-sized saucepan over medium-low heat, gently melt together the unsalted butter, creamy peanut butter, and butterscotch chips. Stir frequently, taking your time so the mixture becomes smooth and glossy. This slow melt is crucial to achieve that luscious creamy texture without scorching.
Step 3: Add Vanilla and Cool Slightly
Once smooth, stir in the teaspoon of vanilla extract, then remove the saucepan from heat. Allow the mixture to rest and cool for about 2 to 3 minutes. Cooling slightly is key so that when you fold in the marshmallows, they don’t melt and lose their delightful chewiness.
Step 4: Fold in the Fruity Mini Marshmallows
Pour the fruity-flavored mini marshmallows into a large mixing bowl. Then, pour the slightly cooled peanut butter and butterscotch mixture right on top. Using a spatula, gently fold everything together until all those sweet, colorful marshmallows are evenly coated in the luscious peanut butter blend.
Step 5: Transfer and Chill
Transfer the combined mixture into your prepared pan and spread it evenly with a spatula. Smooth the top so every square will be neat and uniform. Pop the pan in the fridge and chill for 1½ to 2 hours until the bars are firmly set and ready to cut.
Step 6: Slice and Serve
Once chilled, lift the set mixture out of the pan using the parchment overhang. Place it onto a large cutting board and slice into 16 squares with a sharp knife. For clean cuts, run the knife under hot water and wipe it between slices. Now your Peanut Butter Marshmallow Squares Recipe is ready to enjoy!
How to Serve Peanut Butter Marshmallow Squares Recipe
Garnishes
To brighten up these sweet squares when serving, sprinkle a few extra mini marshmallows on top or drizzle with melted chocolate or caramel. A light dusting of crushed peanuts adds a satisfying crunch and an extra punch of peanut flavor.
Side Dishes
Pair these marshmallow squares with a cold glass of milk or a creamy vanilla latte to balance the sweetness. They also work wonderfully alongside fresh, sliced fruit like strawberries or banana for a more refreshing treat.
Creative Ways to Present
For parties, cut the squares into bite-sized pieces and place them on a festive platter with colorful toothpicks for easy snacking. Alternatively, layer crumbled squares into parfait glasses with vanilla yogurt and fresh berries for a fun dessert twist.
Make Ahead and Storage
Storing Leftovers
Keep any leftover Peanut Butter Marshmallow Squares in an airtight container in the refrigerator. They will stay fresh and chewy for up to a week, making them a perfect grab-and-go snack anytime.
Freezing
If you want to save them longer, these squares freeze beautifully. Wrap individual squares in plastic wrap and place them in a freezer bag. They can be frozen for up to 2 months. Thaw overnight in the fridge before serving.
Reheating
While these squares are best enjoyed cold or at room temperature, if you prefer them slightly warmed, pop them in the microwave for 10-15 seconds. This softens them just enough to enjoy that gooey peanut butter goodness without melting the marshmallows completely.
FAQs
Can I use crunchy peanut butter instead of creamy?
Yes! Crunchy peanut butter will add a nice little crunch to the texture, giving the squares an extra bit of interest. Just expect a slightly different mouthfeel compared to the smooth, creamy variety.
Are there alternatives to butterscotch chips?
Absolutely. White chocolate chips or semi-sweet chocolate chips are excellent substitutes and will change the flavor profile while still keeping the treat deliciously sweet and rich.
Can I use regular marshmallows instead of fruity-flavored ones?
Sure thing! Regular mini marshmallows work perfectly and will give a classic vanilla marshmallow flavor. Using fruity marshmallows just adds a fun splash of color and a little fruity twist.
Is it possible to make these squares vegan?
With a few tweaks, yes. Use dairy-free butter, a vegan peanut butter brand, dairy-free butterscotch or caramel chips, and vegan marshmallows to make this recipe fit a vegan diet.
How long do these squares last at room temperature?
Because of the marshmallows and butter, it’s best to store these in the refrigerator. Left at room temperature, they might become too soft or sticky, especially in warmer environments.
Final Thoughts
There’s something so comforting and fun about the Peanut Butter Marshmallow Squares Recipe that makes it feel like a special treat every time. Whether you’re making it for a crowd or just a little personal indulgence, these squares are bursting with flavor and nostalgic charm. Give this recipe a try—you’ll be amazed at how quickly these little squares become a beloved favorite in your baking repertoire!
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Peanut Butter Marshmallow Squares Recipe
- Total Time: 1 hour 35 minutes
- Yield: 16 servings
Description
Peanut Butter Marshmallow Squares are a no-bake, chewy, and sweet treat combining creamy peanut butter, butterscotch chips, and fruity mini marshmallows. Perfect for parties or a fun snack, these bars are easy to prepare and require chilling to set for a firm yet tender texture.
Ingredients
Ingredients
- ½ cup unsalted butter
- 1 cup creamy peanut butter (Peter Pan brand used)
- 11 ounce bag butterscotch chips (Nestle Toll House brand used)
- 1 teaspoon vanilla extract
- 10 ounce bag fruity-flavored mini marshmallows (Jet-Puffed brand used)
Instructions
- Prepare the Pan: Line an 8×8-inch straight-sided baking pan with parchment paper, allowing enough overhang on the sides to lift the bars out later. Lightly spray the parchment with non-stick baker’s spray to ensure easy removal.
- Melt Ingredients: In a 3½ to 4-quart saucepan over medium-low heat, combine the unsalted butter, creamy peanut butter, and butterscotch chips. Stir continuously until the mixture is completely melted and smooth, creating a luscious base.
- Add Vanilla and Cool: Stir in the vanilla extract, then remove the saucepan from heat. Allow the mixture to cool for 2 to 3 minutes. This step is important to avoid melting the marshmallows when they are added.
- Combine with Marshmallows: Place the fruity mini marshmallows in a large mixing bowl. Pour the slightly cooled peanut butter and butterscotch mixture over the marshmallows and gently fold together until all marshmallows are evenly coated with the peanut butter mixture.
- Transfer to Pan: Pour the combined mixture into the prepared pan and spread it out evenly to form a uniform layer.
- Chill to Set: Refrigerate the pan for 1½ to 2 hours or until the mixture is fully set and firm to the touch.
- Remove from Pan: Using the parchment paper overhang, lift the chilled peanut butter bars from the pan onto a large cutting board.
- Slice into Squares: Cut the slab into 16 equal squares using a large sharp knife. For clean cuts, run the knife under hot water and wipe it dry between slices.
Notes
- Use a sturdy spatula or wooden spoon for folding to gently coat the marshmallows without crushing them.
- If bars are too sticky to handle after chilling, return to fridge to firm up more before slicing.
- Store leftover bars in an airtight container in the refrigerator for up to one week.
- You can substitute butterscotch chips with white chocolate chips for a different flavor.
- Ensure mixture cools before adding marshmallows to prevent melting and losing texture.
- Prep Time: 15 minutes
- Cook Time: 10 minutes
- Category: Dessert
- Method: Stovetop
- Cuisine: American
