Decadent Marshmallow Oreo Treats You Can’t Resist

Oh my gosh, you have GOT to try these Marshmallow Oreo Treats! They’re my go-to dessert when I need something quick, easy, and guaranteed to make everyone happy. Picture this: crunchy Oreos, gooey marshmallows, and just enough butter to make it all come together perfectly. No oven required – just melt, mix, and press.

Marshmallow Oreo Treats - detail 1

I first made these for my niece’s party when I realized (oops!) I’d forgotten to bake her cake. Twenty minutes later, these treats saved the day! Now my family demands them at every gathering. They’re the perfect blend of childhood nostalgia and grown-up indulgence – like Rice Krispie treats decided to dress up in their fanciest chocolatey outfit.

Honestly, the hardest part is waiting for them to set before digging in. But trust me, that first bite of chewy, chocolatey goodness? Totally worth it!

Why You’ll Love These Marshmallow Oreo Treats

Seriously, what’s not to love? Here’s why these treats are my absolute weakness (and soon to be yours too):

  • No-bake magic: No oven, no fuss—just melt, mix, and press. Perfect for when you need a dessert now.
  • Kid-approved: My nieces and nephews go wild for these. Crushing Oreos? Stirring marshmallows? It’s like edible playtime.
  • Crowd-pleaser: Bring these to any party, and watch them disappear faster than you can say “Oreo.”
  • Nostalgia bomb: Like Rice Krispie treats, but all grown up with that chocolatey crunch we crave.

Bonus? You probably already have the ingredients in your pantry. Win-win!

Marshmallow Oreo Treats Ingredients

Here’s what you’ll need to make these addictive treats (and yes, I’ve made this enough times to know these measurements by heart!):

  • 9 cups Oreos, crushed (that’s about 2 standard packages – and no, I won’t judge if you snack on a few while crushing!)
  • 8 tablespoons salted butter (1 stick – the salt balances the sweetness perfectly)
  • 10 cups mini marshmallows, divided (8 cups melted, 2 cups stirred in for extra gooey pockets)

Ingredient Notes & Substitutions

Don’t stress if you’re missing something – here’s how to adapt:

  • Oreos: Gluten-free Oreos work great! Golden Oreos? Also delicious (but less chocolatey).
  • Butter: Unsalted butter works if that’s what you have – just add a pinch of salt to the melted mixture.
  • Marshmallows: Out of minis? Chop regular marshmallows – they melt slower, so stir extra carefully.
  • Mix-ins: Toss in chocolate chips, peanut butter chips, or even a drizzle of caramel before pressing into the pan.

Pro tip: Measure your marshmallows after crushing the Oreos – otherwise you’ll have sticky fingers when handling the bag!

How to Make Marshmallow Oreo Treats

Okay, let’s get to the fun part – making these irresistible treats! It’s seriously so easy, you’ll wonder why you haven’t been making them every week. Just follow these simple steps, and you’ll have a pan of chocolatey, marshmallowy heaven in no time.

Marshmallow Oreo Treats - detail 2

Step 1: Prep the Pan

First things first – grab that 9×13-inch pan and line it with parchment paper, letting some hang over the edges. This little trick will save you so much headache later when it’s time to lift out those perfect squares. No parchment? A light butter greasing works too, but trust me, parchment is the MVP here.

Step 2: Crush the Oreos

Now the cathartic part! Dump those Oreos into a large ziplock bag (leave a little air in there so it doesn’t pop) and go to town with a rolling pin. You want them mostly fine with some small chunks – those little bits add such great texture! Pro tip: if the bag starts to leak, double-bag it. Learned that the messy way!

Step 3: Melt Butter and Marshmallows

In a big pot over low heat (LOW is key!), melt your butter first, then add 8 cups of mini marshmallows. Stir constantly with a wooden spoon – this isn’t the time to multitask. You’ll know it’s ready when it’s gloriously smooth and glossy, about 3-4 minutes. If it starts to brown, your heat is too high!

Step 4: Combine Ingredients

Take the pot off the heat and immediately add your crushed Oreos and the remaining 2 cups of mini marshmallows. Fold gently but thoroughly – you want every bit coated in that marshmallow goodness but still maintaining some texture. Those whole mini marshmallows you’re adding now? They’ll create magical little gooey pockets in the finished treats.

Step 5: Press into Pan

Dump your mixture into the prepared pan and press it in evenly. Here’s my trick: lightly grease your hands (or use another piece of parchment) to press it down without sticking. Don’t press too hard – you want these to stay light and chewy, not dense like a brick!

Step 6: Set and Slice

Now the hardest part – waiting! Let them sit at room temperature for a full hour to set up properly. I know it’s tempting, but cutting too soon leads to sticky, messy squares. Once they’re set, use the parchment “handles” to lift them out before slicing. Clean your knife between cuts for perfect squares every time.

Tips for Perfect Marshmallow Oreo Treats

After making these treats more times than I can count, here are my golden rules:

  • Grease those hands! A little butter or cooking spray on your fingers makes pressing the mixture SO much easier (and less sticky).
  • Gentle pressing: Don’t compact them too much—you want that light, chewy texture.
  • Cool completely: I know it’s hard to wait, but slicing too soon makes a gooey mess.
  • Storage secret: Layer them between parchment paper in an airtight container—they’ll stay fresh for days (if they last that long!).

Oh, and always make extra—these disappear FAST!

Marshmallow Oreo Treats Variations

Oh, the fun you can have with these! Once you’ve mastered the basic recipe, try these easy twists:

  • Caramel lovers: Drizzle melted caramel over the top before slicing – the saltiness cuts through the sweetness perfectly.
  • Peanut butter madness: Swirl in ½ cup peanut butter with the melted marshmallows for that classic flavor combo.
  • Mint chocolate magic: Use mint Oreos and add a drop of peppermint extract to the marshmallow mix.

Really, the possibilities are endless – what will you try first?

Serving and Storing Marshmallow Oreo Treats

These treats are best served at room temperature—that’s when the marshmallow is perfectly chewy and the Oreos still have that satisfying crunch. Store leftovers (ha!) in an airtight container with parchment between layers to prevent sticking. They’ll stay delicious for 3 days… if you can resist eating them all in one sitting!

Marshmallow Oreo Treats Nutritional Information

Just so you know what you’re indulging in (no judgment here!), each square has about 220 calories. Keep in mind these are estimates – actual values change based on your specific ingredients and how big you slice ’em!

Marshmallow Oreo Treats FAQs

I get questions about these treats all the time – here are the answers to the ones I hear most often:

  • Can I use regular marshmallows instead of mini? Absolutely! Just chop them first – they’ll take longer to melt but work just fine. You might need to stir a bit more to get them smooth.
  • How long do these treats last? They’re best within 3 days stored at room temperature in an airtight container. After that, they start to lose that perfect chew (not that they ever last that long in my house!).
  • Can I make these gluten-free? Yes! Just swap in gluten-free Oreos – the texture and taste are nearly identical.
  • Why did my treats turn out hard? You probably cooked the marshmallows too long or pressed them too firmly into the pan. Low heat and a gentle touch are key!
  • Can I freeze these? You can, but the texture changes slightly when thawed. If you do freeze them, wrap each square individually for best results.

Still have questions? Just ask – I’ve made every mistake with these treats so you don’t have to!

Share Your Marshmallow Oreo Treats

I’d LOVE to see your creations! Tag me on social media or leave a comment – did you stick with the classic version or try a fun twist? Snap a pic before they disappear (I know how that goes!).

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Marshmallow Oreo Treats

Decadent Marshmallow Oreo Treats You Can’t Resist


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  • Author: Chef Ivan
  • Total Time: 1 hour 10 minutes
  • Yield: 20 squares 1x
  • Diet: Vegetarian

Description

A delicious and easy-to-make treat combining the crunch of Oreos with the sweetness of marshmallows.


Ingredients

Scale
  • 9 cups Oreos, crushed
  • 8 tablespoons salted butter
  • 10 cups mini marshmallows, divided

Instructions

  1. Prep the pan: Line a 9×13-inch baking pan with parchment paper and set aside.
  2. Crush the Oreos: Place Oreos in a large ziplock bag and crush them using a rolling pin until finely broken. Set aside.
  3. Melt butter and marshmallows: In a large pot over low heat, melt the butter and 8 cups of mini marshmallows, stirring frequently until smooth and combined.
  4. Combine ingredients: Remove the pot from heat. Add the crushed Oreos and the remaining 2 cups of mini marshmallows to the melted mixture. Stir until the Oreos and marshmallows are fully coated.
  5. Press into pan: Transfer the mixture to the prepared pan. Using greased hands or another piece of parchment paper, gently press the mixture evenly into the pan without pressing too hard, to keep the treats soft.
  6. Set and slice: Allow the treats to cool and set at room temperature for at least 1 hour before slicing into squares.

Notes

  • Use greased hands or parchment paper to press the mixture into the pan for easier handling.
  • Store in an airtight container at room temperature for up to 3 days.
  • Prep Time: 10 minutes
  • Cook Time: 0 minutes
  • Category: Dessert
  • Method: No-Bake
  • Cuisine: American

Nutrition

  • Serving Size: 1 square
  • Calories: 220
  • Sugar: 18g
  • Sodium: 120mg
  • Fat: 9g
  • Saturated Fat: 4g
  • Unsaturated Fat: 3g
  • Trans Fat: 0g
  • Carbohydrates: 32g
  • Fiber: 1g
  • Protein: 2g
  • Cholesterol: 10mg

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