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What if we took a classic boxed cookie and made it massive, stuffed, and utterly unhinged? I was staring at a box of traditional treats when the wild idea hit me: we need to recreate Girl Scout Do Si Dos, but give them that crazy Cookies Charm loaded energy! We’re talking thick, chewy oat cookies sandwiching an obnoxious amount of creamy peanut butter filling.

Girl Scout Do Si Dos 15

These aren’t your average dainty little sandwich cookies. We are going big with natural peanut butter, rustic rolled oats, and a filling so thick it practically oozes out the sides when you take a bite! This is the ultimate mashup of childhood nostalgia and our signature monster-sized baking philosophy.

Go Big Energy: Why You’ll Be Obsessed

You are going to absolutely lose your mind over these homemade Girl Scout Do Si Dos! Forget rationing out a tiny sleeve of cookies. We are making massive, thick, bakery-style sandwiches that unapologetically pack in the peanut butter.

The texture contrast is completely off the charts. You get a chewy, hearty oat cookie on the outside, giving way to a rich, sweet, gooey peanut butter center. Plus, making them at home means you control the stuffing ratio—and around here, more is always more!

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Homemade Girl Scout Do Si Dos overflowing with thick creamy peanut butter filling

Girl Scout Do Si Dos


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5 from 12 reviews

Description

Transform a childhood classic into a monster-sized treat with these thick, chewy oat cookies loaded with a rich peanut butter center. These bakery-style sandwich cookies offer a perfect balance of rustic texture and creamy, sweet filling for the ultimate nostalgic indulgence.


Ingredients

  • Natural peanut butter
  • Rolled oats
  • Oat flour
  • Coconut sugar
  • Egg
  • Vanilla extract
  • Baking soda
  • Sea salt
  • Maple syrup


Instructions

  1. Preheat your oven to 375°F.
  2. In a large mixing bowl, combine the peanut butter, coconut sugar, and whisked egg until smooth.
  3. Add the vanilla, rolled oats, oat flour, baking soda, and a pinch of sea salt, stirring until a thick dough forms.
  4. Scoop the dough into 1/2 tablespoon portions, roll into balls, and place them on an un-greased baking sheet.
  5. Gently press down on each ball and bake for 8-10 minutes until the edges are lightly golden.
  6. Allow the cookies to rest on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.
  7. Prepare the filling by mixing peanut butter, maple syrup, and a small amount of oat flour until a thick paste forms.
  8. Spread a generous layer of filling onto the bottom of one cooled cookie and press another cookie on top to form a sandwich.

Notes

For the best results, ensure your peanut butter is well-stirred and at room temperature before starting the dough. If you prefer a stiffer filling that doesn’t budge, you can refrigerate the assembled sandwiches for 20 minutes to allow the peanut butter and maple syrup mixture to set firmly.

  • Prep Time: 15 mins
  • Cook Time: 10 mins
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

The Candy Arsenal: What You’ll Need

Bowls of natural peanut butter, rolled oats, and coconut sugar on a counter
Girl Scout Do Si Dos 16

To build these monster sandwiches, we are ditching the fluff and packing in serious flavor. We want a dough that holds up to being stacked and stuffed!

  • Natural Peanut Butter: The undisputed star of the show. Grab the drippy kind for maximum moisture.
  • Rolled Oats & Oat Flour: This gives us that thick, hearty, chewy texture that can handle a massive filling.
  • Coconut Sugar: Adds a deep, caramel-like sweetness that pairs perfectly with roasted peanuts.
  • Maple Syrup: The secret weapon for our ultra-creamy, perfectly sweetened peanut butter center.
  • Egg, Vanilla, Baking Soda, & Sea Salt: The essential backup dancers to keep our cookies thick and flavorful.

Monster Steps: How to Make It

Step 1: Fire Up the Oven

Preheat your oven to 375°F. We want a hot oven to get those edges crispy while keeping the center perfectly chewy.

Step 2: Mix the Wet and Dry

In a massive bowl, aggressively mix your peanut butter, coconut sugar, and whisked egg. Dump in the vanilla, oats, oat flour, baking soda, and a heavy pinch of sea salt. Stir it up until you have a thick, beautiful dough.

Step 3: Scoop and Bake

Using a 1/2 tablespoon, scoop the dough and roll it into bold little spheres. Drop them on an un-greased baking sheet, give them a gentle press, and bake for 8-10 minutes. Watch for those lightly browned edges!

Step 4: Cool the Cookies

Let them chill on the pan for about 5 minutes before moving them to a wire rack. Patience is key—they need to firm up so they can handle the heavy load of filling we’re about to drop on them.

Step 5: Whip Up the Filling

While the cookies cool, mix your peanut butter, maple syrup, and a dash of oat flour. You want a thick, scoopable paste that won’t run away.

Step 6: Build the Sandwiches

Grab a cooled cookie, slather an absurd amount of filling on the bottom, and smash another cookie right on top. Boom! The ultimate sandwich cookie.

Stuffing Secrets: Riley’s Wild Tips

A stack of fully assembled peanut butter oatmeal sandwich cookies
Girl Scout Do Si Dos 17

If you want to nail the perfect Girl Scout Do Si Dos replica with a loaded twist, you have to treat the filling with respect. Make certain your cookies are completely cool before you even think about building your sandwiches, or that glorious peanut butter center will melt right out the sides!

Want to prep ahead? You can totally freeze the dough balls! It’s the same trick I use when prepping my massive peanut butter blossom cookies for a crowd. Just bake them straight from frozen and add a minute or two to the timer.

Mashup Ideas: Go Even Bigger

Who says we have to stop at peanut butter? Let’s break the rules and stuff these sandwiches with something totally unhinged. Try swirling some marshmallow fluff into the center for a Fluffernutter vibe, or dip half the finished sandwich in dark chocolate!

If you’re feeling adventurous, you can swap the peanut butter for cookie butter or almond butter. For a slightly different take on the classic recipe, check out this great version of homemade Do-Si-Dos. Or, if you want more oat-packed madness, you could use the base from my chewy oatmeal scotchies and stuff them with the peanut butter filling!

Party Mode: How to Serve

A large party platter filled with thick homemade Girl Scout Do Si Dos
Girl Scout Do Si Dos 18

These homemade Girl Scout Do Si Dos demand an audience. Pile them high on a massive platter at your next party and watch people lose their minds over the nostalgic shape and the crazy-thick filling!

If you want to serve an epic cookie spread, pair these sandwiches alongside a huge batch of my gooey chocolate no bake cookies. Serve them with ice-cold milk or a giant mug of hot chocolate for the ultimate dipping experience!

That’s it, my fellow cookie rebels! You just recreated an absolute legend and gave it the bold, monster-sized treatment it deserves. Making Girl Scout Do Si Dos from scratch proves that you don’t have to wait for cookie season to get your peanut butter fix.

If you’re hooked on making gigantic, copycat treats, you absolutely have to try my legendary Crumbl cookie recipe copycat next! Don’t forget to show me your massive, overflowing sandwich cookies online. Tag me on Instagram and share your wildest creations on TikTok—let’s keep pushing the limits of what a cookie can be!

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