Dandy-Do Cookies Recipe
Get ready to savor pure delight with this Dandy-Do Cookies Recipe—a childhood-inspired treat that guarantees grins from the first bite! These cookies are an irresistible swirl of creamy peanut butter, chewy oats, gooey marshmallows, and melty chocolate chips, all wrapped up in a golden, bakery-style cookie. Whether you’re stirring up nostalgia or looking for a new favorite to share, this Dandy-Do Cookies Recipe checks every box with its satisfyingly chewy texture and rich, sweet flavor. You won’t believe how quickly these disappear from the cookie jar!

Ingredients You’ll Need
The secret behind this Dandy-Do Cookies Recipe is a perfectly balanced lineup of familiar, friendly ingredients. Each one plays a special part, from the softness of the butter to the fluffy bite of marshmallows and the irresistible decadence of chocolate chips.
- Peanut butter (1 cup, creamy): Gives the cookies their signature nutty flavor and keeps every bite rich and moist.
- Unsalted butter (1/2 cup, softened): Provides a tender, melt-in-your-mouth texture and helps carry all those delicious flavors.
- Granulated sugar (1 cup): Adds classic sweetness and helps create that perfect golden color.
- Packed brown sugar (1/2 cup): Brings a subtle molasses note and a touch of chewiness you’ll crave.
- Large eggs (2): Bind everything together and give the cookies structure and lift.
- Vanilla extract (1 teaspoon): Rounds out the flavors with warm, homey notes.
- All-purpose flour (1 1/2 cups): The backbone of the dough for the ideal cookie crumb.
- Baking soda (1 teaspoon): Helps the cookies rise and creates that lovely, slightly domed top.
- Salt (1/4 teaspoon): Balances the sweetness and intensifies every tasty morsel.
- Quick oats (1 1/2 cups): Deliver that hearty, chewy texture while making every bite satisfyingly robust.
- Mini marshmallows (1 cup): Create gooey pockets of fun and a whimsical sweet finish.
- Semi-sweet chocolate chips (1 cup): Scatter bursts of melty, chocolatey goodness throughout the batch.
How to Make Dandy-Do Cookies Recipe
Step 1: Prep Your Oven and Pans
Start by preheating your oven to 350°F (175°C). Line a couple of baking sheets with parchment paper—this ensures your cookies lift off easily and don’t end up sticking or overcooking on the bottom. Setting up your pans first makes the whole process smoother and lets you focus on the real fun: making that irresistible cookie dough!
Step 2: Cream Together the Butters and Sugars
In a large mixing bowl, add the creamy peanut butter, softened unsalted butter, granulated sugar, and brown sugar. Using an electric mixer or a sturdy wooden spoon, beat everything together until it’s light, fluffy, and the color lightens a bit. This key step guarantees you’ll get perfectly tender cookies with a gentle, melt-in-your-mouth bite.
Step 3: Mix in Eggs and Vanilla
Add the eggs, one at a time, beating well after each addition. This step lets each egg fully incorporate, giving your dough a silky, unified texture. Splash in the vanilla extract and give it all another mix—the aroma at this stage is pure cookie bliss!
Step 4: Blend Dry Ingredients and Combine
In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add these dry ingredients to the wet mixture, mixing gently after each addition until just combined. Don’t overmix—stop as soon as you see no more dry streaks. This keeps your cookies soft instead of dense.
Step 5: Stir In Oats, Marshmallows, and Chocolate Chips
Now for the fun part! Fold in the quick oats, mini marshmallows, and semi-sweet chocolate chips. Each addition turns your dough into a playful, chunky masterpiece. If you’d like those pretty pockets of marshmallow and gooey chocolate on top, save a few of each to press into the tops of the dough balls later.
Step 6: Scoop and Arrange Dough
Using a spoon or small cookie scoop, drop heaping tablespoons of dough onto the prepared baking sheets, leaving about 2 inches between each mound. The cookies will spread a little as they bake, so this spacing is key. If you’re going for a bakery-style finish, nestle a few extra marshmallows and chips on top of each for that “just bought” look.
Step 7: Bake to Golden Perfection
Slide your trays into the oven and bake for 10 to 12 minutes. Watch for golden edges with centers that still look slightly soft—this signals chewy, perfect cookies! They’ll firm up as they cool. Let them sit on the baking sheet for about 5 minutes, then transfer to a wire rack to finish cooling (if you can resist sneaking one early).
How to Serve Dandy-Do Cookies Recipe

Garnishes
For a picture-worthy finish, dust the cookies with a light sprinkling of powdered sugar once they’re cool. Or, if you’re feeling extra, drizzle melted chocolate over the tops and add a few extra mini marshmallows or crushed peanut pieces. Honestly, a plate of these beauties barely needs dressing up, but a touch of garnish never hurts!
Side Dishes
Pair your Dandy-Do Cookies Recipe with a tall glass of cold milk for that classic comfort, but don’t stop there—try them with a mug of hot cocoa, silky latte, or even a scoop of vanilla ice cream. These cookies are dreamy sides for a brunch spread or as a sweet finish to a casual dinner with friends.
Creative Ways to Present
Shape the dough into large bakery-style cookies for gifting or small bite-sized treats for a crowd. Stack them in a cellophane bag tied with ribbon for a thoughtful homemade present, or arrange on a decorative tiered platter for parties. For a fun twist, press a toasted marshmallow between two cookies for a next-level s’mores sandwich. However you present them, these cookies are sure to turn heads.
Make Ahead and Storage
Storing Leftovers
Keep your leftover Dandy-Do Cookies Recipe tasting just-baked by storing them in an airtight container at room temperature. They’ll stay soft and delicious for up to a week, though it’s likely they’ll vanish long before then. To retain maximum chewiness, you can add a slice of bread to the container—this keeps cookies fresher by adding moisture.
Freezing
These cookies freeze like a dream! Once completely cooled, pop them into a freezer-safe bag or container, separating layers with parchment paper to prevent sticking. They’ll keep their fabulous texture and flavor for up to three months, making them perfect for prepping ahead or surprise cookie cravings.
Reheating
If you love your cookies a little warm and melty (who doesn’t?), reheat them in the microwave for just 10–15 seconds. For a bigger batch, a short stint in a low oven (about 300°F for 5 minutes) will revive that fresh-baked softness. Enjoy them with the chocolate just gooey—so satisfying!
FAQs
Can I use chunky peanut butter instead of creamy?
Absolutely! Chunky peanut butter will give your Dandy-Do Cookies Recipe even more texture with subtle nutty bits throughout. Just be aware that the dough might spread a little less, but the flavor will be extra hearty.
What’s the secret to keeping the marshmallows from melting too much?
A little chill goes a long way! Try refrigerating your dough for 15 minutes before baking. This helps firm up the marshmallows so they hold their shape, giving those lovely gooey pockets instead of vanishing into the dough.
Can I swap chocolate chips for another type Dessert
Of course! Feel free to substitute semi-sweet chocolate chips with milk, dark, or even white chocolate chips. Chopped chocolate bars or butterscotch chips are also delicious ways to personalize your Dandy-Do Cookies Recipe.
Is it okay to double the Dandy-Do Cookies Recipe?
Definitely! This recipe scales up beautifully—just make sure you use a large enough mixing bowl, and bake in batches to avoid overcrowding. More cookies means more joy to share (or stash for yourself).
Can I make the dough ahead and bake later?
Yes! You can refrigerate the dough, tightly covered, for up to 2 days. When you’re ready to bake, scoop and bake as directed—chilled dough even helps create slightly thicker, chewier cookies.
Final Thoughts
If you’re searching for a cookie that’s playful, homey, and completely scrumptious, the Dandy-Do Cookies Recipe is your new go-to. There’s nothing more rewarding than a tray of these chewy, chocolatey, marshmallow-studded wonders cooling on your counter. Whip up a batch soon—your taste buds (and loved ones) will thank you!
Print
Dandy-Do Cookies Recipe
- Total Time: 27 minutes
- Yield: 30 cookies 1x
- Diet: Vegetarian
Description
These Dandy-Do Cookies are a delightful combination of creamy peanut butter, chewy oats, gooey marshmallows, and rich chocolate chips. They are a perfect treat for any occasion, offering a satisfying blend of flavors and textures.
Ingredients
Cookies:
- 1 cup creamy peanut butter
- 1/2 cup unsalted butter, softened
- 1 cup granulated sugar
- 1/2 cup packed brown sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- 1 1/2 cups all-purpose flour
- 1 teaspoon baking soda
- 1/4 teaspoon salt
- 1 1/2 cups quick oats
- 1 cup mini marshmallows
- 1 cup semi-sweet chocolate chips
Instructions
- Preheat the oven: Preheat the oven to 350°F and line baking sheets with parchment paper.
- Cream together ingredients: In a large bowl, cream together the peanut butter, softened butter, granulated sugar, and brown sugar until light and fluffy. Beat in the eggs one at a time, then add the vanilla extract.
- Combine dry ingredients: In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add the dry ingredients to the wet ingredients and mix until just combined.
- Stir in mix-ins: Stir in the oats, mini marshmallows, and chocolate chips.
- Bake: Drop rounded tablespoons of dough onto the prepared baking sheets. Bake for 10–12 minutes or until lightly golden. Cool on the baking sheet before transferring to a wire rack.
Notes
- To prevent excessive melting, chill the dough before baking.
- For a bakery-style appearance, press additional marshmallows and chocolate chips on top before baking.
- Prep Time: 15 minutes
- Cook Time: 12 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 cookie
- Calories: 160
- Sugar: 12g
- Sodium: 100mg
- Fat: 9g
- Saturated Fat: 4g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 18g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 20mg