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S'mores Bars are a delicious twist on the classic campfire dessert with delicious layers of graham crackers, chocolate, and marshmallows. |

S'mores Bars

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  • Author: Sam Hu | Ahead of Thyme
  • Total Time: 3 hours 54 minutes
  • Yield: 16 bars
  • Diet: Vegetarian


S'mores Bars are a delicious twist on the classic campfire dessert. With delicious layers of graham crackers, chocolate, and marshmallows, these bars are chewy, gooey, and nostalgic. 


For the graham cracker base:

  • 1 ½ cups (180 grams) Graham cracker crumbs
  • 2 tablespoons (25 grams) white sugar
  • 5 tbsp (70 grams) unsalted butter, melted

For the chocolate ganache:

  • 12 ounces (340 grams) semi-sweet chocolate, finely chopped
  • 1/2 cup (113 grams) heavy cream

For the marshmallow topping:

  • 2 ½ cups (125 grams) mini marshmallows
  • 1.75 ounces (50 grams) milk chocolate bar, pieces broken (optional, for decoration)
  • 1 Graham crackerbroken up into pieces (optional, for decoration)
  • 1/4 cup (42 grams) milk chocolate chips (optional, for decoration)


Make the graham cracker base:

  1. Preheat the oven to 350°F. Prepare an 8-inch square pan or a 9-inch square pan with two sheets of parchment paper, leaving an overhang on each side for easy lifting.
  2. In a medium mixing bowl, add graham cracker crumbs and melted butter. Mix well with a fork until well combined.
  3. Transfer the mixture into the prepared pan. Use a flat bottomed measuring cup and press into the pan to create a packed, even layer.
  4. Place into the oven to bake for 14 minutes. Remove from the oven and allow to cool to just barely warm.

Make the chocolate ganache layer:

  1. In a medium mixing bowl, add the chopped chocolate and heavy cream.
  2. Place the bowl into the microwave and microwave in 30 second intervals, stirring in between, until fully melted and smooth.
  3. Immediately pour the chocolate over the slightly cooled down graham cracker base.
  4. Place into the fridge for 1-2 hours to set.

Add the marshmallow topping:

  1. Preheat the oven to 400°F.
  2. When the chocolate ganache is mostly set (slightly soft is okay), remove from the fridge and add the marshmallows on top.
  3. Optional: If using, add the milk chocolate pieces, graham cracker pieces, and milk chocolate chips on top.
  4. Place into the preheated oven to bake for 10 minutes, until marshmallows are toasty. Remove from the oven and allow the bars to fully cool to room temperature (about 1 hour) before slicing with a warm knife.


How to store: Allow the S’mores Bars to cool completely to room temperature. Then, transfer to an airtight container and store at room temperature for up to 2 days or up to 7 days in the fridge.

How to freeze: Allow the bars to cool to room temperature, then slice into individual portions and place on a parchment lined baking sheet. Freeze for 1-2 hours until hard. Then, wrap each piece tightly in plastic cling wrap and then place in an airtight container or freezer bag. Freeze for up to 3 months. You can also freeze the entire dessert without slicing. Wrap tightly in plastic cling wrap and double wrap in aluminum foil. Place in the fridge overnight to thaw before serving.

  • Prep Time: 25 minutes
  • Rest Time: 3 hours
  • Cook Time: 24 minutes
  • Category: Dessert
  • Method: Bake
  • Cuisine: American