Hot Chocolate Bomb Cookies (Printable Version)

Molten chocolate cookies with marshmallow filling—gooey, chunky, and perfect for cozy evenings.

# The Ingredients You'll Need:

→ Cookie Dough

01 - 2 ½ cups (310 g) all-purpose flour
02 - ¾ cup (75 g) unsweetened cocoa powder
03 - 1 tsp baking soda
04 - ½ tsp salt
05 - 1 cup (225 g) unsalted butter, softened
06 - 1 cup (200 g) brown sugar, packed
07 - ½ cup (100 g) granulated sugar
08 - 2 large eggs
09 - 2 tsp pure vanilla extract

→ Ganache Filling

10 - 4 oz (115 g) dark chocolate (70% cocoa), finely chopped
11 - ⅓ cup (80 ml) heavy cream
12 - Pinch of sea salt

→ Mix-ins & Garnish

13 - 1 ½ cups (75 g) mini marshmallows
14 - ¼ cup (30 g) dark chocolate chips (optional, for topping)

# Step-by-Step Instructions:

01 - In a heatproof bowl, pour hot heavy cream over chopped dark chocolate and let sit for 1 minute. Add a pinch of salt, then whisk until smooth. Chill in the refrigerator for 20–30 minutes until thickened but scoopable.
02 - In a bowl, whisk together flour, cocoa powder, baking soda, and salt.
03 - In a large mixing bowl, cream the butter, brown sugar, and granulated sugar until light and fluffy. Beat in eggs one at a time, then add vanilla.
04 - Gradually mix in the dry ingredients until just combined; do not overmix.
05 - Preheat oven to 350°F (175°C). Line two baking sheets with parchment paper.
06 - Scoop 2 tablespoons of dough and flatten it slightly in your hand. Place 1 heaping teaspoon of chilled ganache and 4–5 mini marshmallows in the center. Top with another tablespoon of dough, sealing edges and forming a thick, tall cookie ball. Repeat with remaining dough and filling.
07 - Place cookies 2 inches apart on the baking sheets. Gently press a few extra marshmallows and chocolate chips on top for decoration. Bake for 11–13 minutes, until cookies are set at the edges but still soft in the center. Crack the tops slightly with a spoon if desired for a rustic look.
08 - Cool on the pan for 10 minutes before transferring to a wire rack. Serve warm for maximum gooeyness.

# Additional Tips::

01 -
  • Rich dark chocolate flavor with a molten center inspired by everyone’s favorite winter drink
  • Each bite includes gooey marshmallow for extra fun texture
  • Ready in about one hour using ingredients found in most kitchens
  • Serves as a memorable dessert for gatherings or a cozy night in
02 -
  • Filling with ganache and marshmallow creates an oozy center as the cookies bake
  • Great for freezing and enjoying later by reheating briefly
  • Dark chocolate ganache keeps the filling silky and not overly sweet
  • Mini marshmallows make every bite a little surprise
03 -
  • Scoop ganache only once it is fully chilled so it stays inside the dough and does not leak
  • Do not overbake The center should feel just set for the ultimate gooey bite
  • Press extra marshmallows on top for bakery style looks and melty spots