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Chocolate Marshmallow Swirl Cookies Recipe

4.6 from 148 reviews

These Chocolate Marshmallow Swirl Cookies combine rich chocolate flavor with gooey marshmallow swirls for a delightful treat. Featuring a tender cocoa-flavored cookie studded with semi-sweet chocolate chips and swirled with mini marshmallows and optional marshmallow fluff, these cookies are perfect for anyone craving a sweet, chewy, and decadent dessert.

Ingredients

Scale

Dry Ingredients:

  • 1 ¾ cups (220 g) all-purpose flour
  • 1/2 cup (40 g) unsweetened cocoa powder
  • 1 teaspoon baking soda
  • 1/4 teaspoon salt

Wet Ingredients:

  • 1/2 cup (115 g) unsalted butter, softened
  • 3/4 cup (150 g) granulated sugar
  • 1/2 cup (100 g) packed light brown sugar
  • 1 large egg
  • 1 teaspoon vanilla extract

Mix-Ins:

  • 1/2 cup (90 g) semi-sweet chocolate chips
  • 1 cup (50 g) mini marshmallows
  • 1/3 cup (60 g) marshmallow fluff (optional)

Instructions

  1. Prep the Oven and Ingredients: Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper or silicone baking mats to prevent sticking. Measure out all your ingredients to streamline the process.
  2. Mix the Dry Ingredients: In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt. This step ensures the cocoa is evenly distributed and there are no lumps in the mixture.
  3. Cream the Butter and Sugars: In a large mixing bowl, use a hand or stand mixer to cream the softened butter, granulated sugar, and brown sugar together until light and fluffy, about 2-3 minutes. The mixture should turn pale and airy, which is essential for a tender cookie.
  4. Add the Wet Ingredients: Beat in the egg and vanilla extract, mixing until fully incorporated. Scrape down the sides of the bowl to ensure everything is well combined.
  5. Combine Wet and Dry: Gradually add the dry ingredients to the wet ingredients in 2-3 additions. Mix on low speed until just combined. Avoid overmixing to prevent tough cookies.
  6. Fold in the Chocolate Chips: Gently fold in the semi-sweet chocolate chips for pockets of melty chocolate in every bite.
  7. Add the Marshmallow Swirl: Add the mini marshmallows and dollops of marshmallow fluff if using. Use a spatula to gently fold in, being careful not to overmix. Aim to have visible streaks of marshmallow throughout the dough for a swirl effect.
  8. Scoop and Bake: Using a cookie scoop or tablespoon, drop the dough onto the prepared baking sheets, spacing them about 2 inches apart. Bake for 8-10 minutes, or until the edges are set but centers remain slightly soft. Watch the marshmallows as they may ooze and caramelize, adding a toasty flavor.
  9. Cool and Enjoy: Let the cookies cool on the baking sheets for 5 minutes before transferring them to wire racks to cool completely. This helps the cookies firm up and prevents breakage.

Notes

  • Optional marshmallow fluff adds more pronounced swirls but can be omitted if unavailable.
  • For best results, do not overmix the dough after adding dry ingredients to keep cookies tender.
  • Watch the baking time carefully; marshmallows can caramelize quickly and adding extra ooze and crunch.
  • Using a cookie scoop helps keep all cookies uniform in size for even baking.
  • Store cooled cookies in an airtight container at room temperature for up to 4 days.

Keywords: chocolate cookies, marshmallow cookies, chocolate marshmallow swirl cookies, homemade cookies, chocolate chip cookies, dessert, baking