
Chocolate Marshmallow Swirl Cookies offer the perfect combination of deep chocolate richness and that nostalgic, gooey marshmallow twist. These cookies bake up with lovely swirled tops and soft centers, making them a show-stopping treat for holiday trays, potlucks, or cozy weekends at home.
I first baked a batch of these for my kids’ school party and now I get requests for them at every family gathering. Watching the marshmallow ripple through the chocolate dough is always pure happiness.
Ingredients
- All-purpose flour: brings structure and gives the cookies their soft bite Always scoop and level your flour for accuracy
- Unsweetened cocoa powder: delivers intense, classic chocolate flavor Dutch-processed cocoa works beautifully if you like a smoother taste
- Baking soda: ensures the cookies have just the right rise Choose a fresh box for best results
- Salt: balances all the sweetness and enhances the cocoa Use fine sea salt for even mixing
- Unsalted butter: adds richness and a melt-in-your-mouth tenderness Let it soften at room temperature for easy creaming
- Granulated sugar: creates those perfectly crisp cookie edges and sweet marshmallow swirl Use superfine sugar for an extra delicate crumb
- Large eggs: bring the dough together for structure and a glossy finish Room temperature eggs blend best for a smooth dough
- Vanilla extract: rounds out the flavors with a warm, inviting note Real vanilla is well worth the splurge here
- Marshmallow fluff: ensures that signature gooey swirl and a soft center For best results, stir the fluff before swirling into dough
Step-by-Step Instructions
- Mix Dry Ingredients:
- Whisk together the flour cocoa powder baking soda and salt in a medium bowl until fully blended and no pockets of cocoa remain This helps distribute the leavening and chocolate evenly
- Cream Butter and Sugar:
- Beat the softened butter with the granulated sugar until the mixture is very light and fluffy This usually takes three to four minutes with an electric mixer and creates the base for a tender cookie
- Add Eggs and Vanilla:
- Mix in the eggs one at a time making sure each is fully absorbed into the batter before adding the next Then blend in the vanilla extract to give the dough a fragrant aroma
- Combine Wet and Dry:
- Slowly add the dry ingredients to the butter mixture mixing only until the flour is just incorporated Stop as soon as no streaks of flour remain so the cookies stay soft not tough
- Swirl in Marshmallow:
- Use a spatula to gently fold in the marshmallow fluff taking care not to overmix True swirls need only a few folds
- Chill the Dough:
- Cover the bowl with plastic wrap and place it in the refrigerator for at least one hour Chilling helps the dough firm up and hold its shape when baking
- Preheat Oven:
- Set your oven to three hundred fifty degrees Fahrenheit Line two baking sheets with parchment paper for easy cleanup and even baking
- Form Cookies:
- Scoop out dough balls with a cookie scoop or tablespoon and place them about two inches apart on the baking sheets Make a small indent in each ball and spoon a little marshmallow fluff in the center Swirl the fluff with a toothpick for a pretty marbled effect
- Bake:
- Slide the trays into the oven and bake for ten to twelve minutes Watch for the edges to set while the centers remain soft For extra gooeyness add a touch more fluff halfway through baking
- Cool on Pan:
- Remove cookies from the oven and let them cool on the tray for five minutes before moving them to a wire rack This lets the marshmallow set and makes handling easy

Every time I bake these my favorite moment is swirling in the marshmallow and seeing the unique ribbons form My youngest always insists on taking charge of the swirling and somehow her cookies always end up with extra marshmallow
Storage Tips
Once the cookies have fully cooled pack them into an airtight tin or container They will stay soft and chewy for up to five days at room temperature If you want to freeze extra cookies layer parchment between them and store for up to one month For freshly baked goodness any time freeze the scooped dough balls and bake straight from the freezer adding a couple of minutes to the baking time
Ingredient Substitutions
If you are out of marshmallow fluff melt real marshmallows gently and swirl them in as directed Chocolate chips can be added for an extra chocolate boost If you want a deeper cocoa flavor opt for Dutch process cocoa instead of natural If butter is not available high-quality baking margarine works in a pinch but you may miss some richness
Serving Suggestions
These cookies shine on their own but also make fun ice cream sandwiches Use chocolate or vanilla ice cream to keep the marshmallow and chocolate theme Try stacking them on a platter with other classics like peanut butter blossoms or ginger snaps or pack into lunch boxes for a sweet midday surprise

Cultural Context
Marshmallow swirl cookies blend old-fashioned American cookie tradition with nostalgic campfire flavors Their gooey texture and fancy appearance make them a favorite at holidays like Christmas or Valentine’s Day but they are easy enough to enjoy all year long
Frequently Asked Questions
- → How do I achieve a perfect marshmallow swirl?
Add a teaspoon of marshmallow fluff to each dough ball's center and use a toothpick to gently swirl before baking.
- → Can real marshmallows be used instead of fluff?
Yes, melted marshmallows or a jumbo marshmallow can be used for a different texture and appearance.
- → Why should the dough be chilled before baking?
Chilling prevents excessive spreading, helps flavors develop, and makes dough easier to handle.
- → Can these cookies be frozen before baking?
Yes, roll the dough into balls and freeze. When ready, bake from frozen, adding a couple extra minutes.
- → What gives these cookies their rich chocolate flavor?
Unsweetened cocoa powder and a balanced sugar ratio provide intense chocolate depth and sweetness.
- → How should baked cookies be stored?
Keep cooled cookies in an airtight container at room temperature to maintain freshness and texture.