Chocolate Marshmallow Cozy Treats (Printer-Friendly)

Soft cookies featuring chocolate chips and gooey marshmallow swirls for a warm, comforting treat.

# List of Ingredients:

→ Dry Ingredients

01 - 1 ¾ cups all-purpose flour (220 g)
02 - ½ cup unsweetened cocoa powder (40 g)
03 - 1 teaspoon baking soda
04 - ¼ teaspoon salt

→ Wet Ingredients

05 - ½ cup unsalted butter, softened (115 g)
06 - ¾ cup granulated sugar (150 g)
07 - ½ cup packed light brown sugar (100 g)
08 - 1 large egg
09 - 1 teaspoon vanilla extract

→ Mix-Ins

10 - ½ cup semi-sweet chocolate chips (90 g)
11 - 1 cup mini marshmallows (50 g)
12 - ⅓ cup marshmallow fluff (60 g), optional

# Preparation Steps:

01 - Preheat oven to 350°F. Line two baking sheets with parchment paper or silicone mats. Measure all ingredients for efficient assembly.
02 - Whisk flour, cocoa powder, baking soda, and salt in a medium bowl to ensure even distribution and remove lumps.
03 - Using a hand or stand mixer, beat softened butter, granulated sugar, and brown sugar until pale and fluffy, about 2-3 minutes.
04 - Add egg and vanilla extract to the creamed mixture, mixing until fully combined. Scrape bowl sides as needed.
05 - Gradually add dry ingredients in 2-3 batches, mixing on low speed just until blended to avoid toughness.
06 - Gently fold semi-sweet chocolate chips into the dough to distribute evenly without breaking them.
07 - Fold in mini marshmallows and optional marshmallow fluff carefully to maintain visible streaks for swirl effect.
08 - Using a cookie scoop or tablespoon, space dough balls 2 inches apart on baking sheets. Bake 8-10 minutes until edges are set but centers remain soft.
09 - Allow cookies to cool on baking sheets 5 minutes before transferring to wire rack to finish cooling and firm up.

# Additional Suggestions:

01 - For thicker cookies, chill dough for 30 minutes before baking.
02 - Watch marshmallows closely during baking to prevent excessive oozing.
03 - Cookies continue to bake slightly after removal; remove when centers are just set.
04 - Store in airtight container with a slice of bread to maintain softness up to 5 days.