Dreamy Peanut Butter Marshmallow Squares: No-Bake Dessert Bliss!

Posted on April 18, 2026

No-bake peanut butter marshmallow squares dessert with graham crackers

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Dreamy Peanut Butter Marshmallow Squares: No-Bake Dessert Bliss!

There’s something undeniably magical about no-bake desserts. They remind me of childhood summers spent in my grandma’s kitchen, where sweet aromas mingled with laughter. The highlight was always her marshmallow squares — a delightful concoction of creamy peanut butter enveloped in fluffy pillows of marshmallow. Every bite was a celebration of texture and flavor, and today, I’m excited to share my version of this timeless treasure. Get ready to whip up these simple Dreamy Peanut Butter Marshmallow Squares that will evoke a sense of comfort and joy!

What Makes This Recipe Special

These squares are the ultimate no-bake treat, combining the rich, nutty flavor of peanut butter with the airy sweetness of marshmallows. The best part? You can whip them up in a snap with just a few pantry staples. Plus, there’s no need to turn on the oven, making them an ideal dessert during the warm months or any time you want something quick and satisfying.

Ingredients

  • 1 cup creamy peanut butter (or crunchy for extra texture)
  • 1/2 cup unsalted butter (melted)
  • 1 cup powdered sugar (you can also use coconut sugar for a slight caramel flavor)
  • 4 cups mini marshmallows (try flavored ones for a fun twist)
  • 1 1/2 cups graham cracker crumbs (or crushed gluten-free cookies)
  • 1 teaspoon vanilla extract (for that nostalgic essence)

Optional Notes:

  • For a vegan version, swap the butter for coconut oil and use agave syrup instead of powdered sugar.
  • Add a pinch of sea salt for a delightful contrast to the sweet flavors.

How to Make Dreamy Peanut Butter Marshmallow Squares

Let’s get started! First, grab a mixing bowl and blend together the melted butter and creamy peanut butter until they’re perfectly combined. When you see a smooth, velvety mixture, it’s time to sprinkle in the powdered sugar. Use a spatula to fold it in until there are no lumps and it has a somewhat thick consistency.

Next, pour in those fluffy mini marshmallows along with the graham cracker crumbs. Stir gently but thoroughly, ensuring every marshmallow has been coated with that luscious peanut butter mixture. You’ll notice it starts to get a bit sticky — that’s a good sign!

Now, line a baking dish (8×8 inches works great) with parchment paper, leaving some overhang for easy removal later. Transfer your peanut butter-marshmallow mixture into the dish and press it down firmly. Use the back of a measuring cup to smooth out the top and make it evenly packed.

Pop the baking dish into the fridge and let it chill for at least 2 hours. This will allow the squares to firm up, making them easier to cut. When the time’s up, take them out and cut into squares, or bars if you’re feeling adventurous!

Serving Suggestions: The Perfect Treat Generation After Generation

Whether you’re enjoying these squares at a family gathering, a picnic, or a quiet evening at home, they are perfect for any occasion. Serve them alongside a tall glass of milk, or with a scoop of vanilla ice cream for an indulgent dessert. You could even sprinkle some chocolate chips or crushed nuts on top for extra flair!

Pairing Ideas

  • With Milk: The creamy texture of milk pairs flawlessly with the soft marshmallows and rich peanut butter.
  • With Coffee: A robust coffee balances the sweetness, making it a delightful afternoon pick-me-up.
  • Top with Chocolate: Drizzle some melted chocolate or sprinkle chocolate shavings for an elegant dessert twist.

Tips and Variations

  • Flavor Swap: Try substituting almond butter for peanut butter for a slightly different taste.
  • Add Crunch: Toss in some chopped nuts or seeds to give your squares an extra crunch.
  • Mini Bites: Create bite-sized squares for easy sharing or a fun party treat.
  • Frozen Treats: Freeze them for a refreshing treat on a hot day; they become chewy and icy!

Q&A Section

1. How long do these squares last?
They can last about a week stored in an airtight container in the fridge. You can also freeze them for longer storage!

2. Can I use natural peanut butter?
Absolutely! Just make sure it’s well mixed, as natural peanut butter can separate.

3. What if I don’t have graham crackers?
No problem! You can use crushed cookies that you enjoy — Oreos work great for a fun cookie twist!

4. Can I make this recipe nut-free?
Yes! Substitute peanut butter with sunbutter or tahini to keep it nut-free while maintaining a creamy texture.

Behind the Scenes

When experimenting with this recipe, I initially used too much powdered sugar, thinking it would make the squares sweeter. However, it turned out to be a sugary mess! After a few trial-and-error attempts, I found the perfect balance where the sweetness complemented the peanut butter without overpowering it. The marshmallows add a cloud-like texture — just the way I remember!

Final Thoughts

Dreamy Peanut Butter Marshmallow Squares are not just a treat; they’re a slice of nostalgia that brings joy to any gathering. These scrumptious squares are best savored with loved ones or enjoyed quietly while curled up with your favorite book. I can’t wait for you to try this recipe and hear how it turns out for you!

Warmest wishes and happy baking! Let me know how yours turns out.

No-bake peanut butter marshmallow squares dessert with graham crackers
Clara Whitley

Dreamy Peanut Butter Marshmallow Squares

A delightful no-bake treat combining creamy peanut butter and fluffy marshmallows, perfect for any occasion.
Prep Time 20 minutes
Total Time 2 hours
Servings: 16 squares
Course: Dessert, Snack
Cuisine: American
Calories: 200

Ingredients
  

Main Ingredients
  • 1 cup creamy peanut butter or crunchy for extra texture
  • 1/2 cup unsalted butter melted
  • 1 cup powdered sugar you can also use coconut sugar for a slight caramel flavor
  • 4 cups mini marshmallows try flavored ones for a fun twist
  • 1 1/2 cups graham cracker crumbs or crushed gluten-free cookies
  • 1 teaspoon vanilla extract for that nostalgic essence

Method
 

Preparation
  1. In a mixing bowl, blend together the melted butter and creamy peanut butter until perfectly combined.
  2. Sprinkle in the powdered sugar and fold it in using a spatula until there are no lumps and it has a somewhat thick consistency.
  3. Pour in the mini marshmallows and the graham cracker crumbs. Stir gently but thoroughly, ensuring every marshmallow is coated with the peanut butter mixture.
  4. Line an 8x8 inch baking dish with parchment paper, leaving some overhang for easy removal. Transfer the mixture into the dish and press down firmly.
  5. Smooth out the top using the back of a measuring cup and pack it evenly.
  6. Refrigerate for at least 2 hours to let the squares firm up before cutting.
  7. Once firm, cut into squares or bars as desired.

Nutrition

Serving: 1gCalories: 200kcalCarbohydrates: 24gProtein: 3gFat: 10gSaturated Fat: 4gSodium: 50mgFiber: 1gSugar: 12g

Notes

For a vegan version, swap the butter for coconut oil and use agave syrup instead of powdered sugar. Add a pinch of sea salt for a delightful contrast to the sweet flavors. You can freeze them for a refreshing treat on hot days.

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