Our No-Bake Chocolate Marshmallow Bars feature a Chocolate, Peanut Butter, and Marshmallow layer sitting on a bed of buttery Graham Cracker Crust. Sorta like a S’more, only better.

Closeup on two Chocolate Marshmallow Bars sitting on a white table in front of a bowl of mini marshmallows.

These yummy S’more Bars are a twist on the classic Cathedral Cookies that I remember from childhood Holiday gatherings.  You might remember them too, colored mini marshmallows held together by chocolate? So good! We have added some peanut butter and a yummy, buttery graham cracker crust and turned them into a no-bake cookie bar.  Sorta like a S’more, only better.  Two thumbs way up on this one.  We will be making these cookies again and again.  Hope you enjoy them as much as we did.

 

Ingredients You Will Need

All the ingredients you will need to make Chocolate Marshmallow Bars including Mini Marshmallows, Chocolate Chips, Peanut Butter, Graham Crackers, Butter and Sugar.

How to Make the Graham Cracker Crust

Collage image showing the steps for making a Graham Cracker Crust.

Step 1:  Add the Graham Cracker sheets to a plastic bag. Finely crush them with a rolling pin.  Make sure you get rid of any big chunks.  This will help the crust stick to the marshmallow chocolate layer later.
Step 2:  Add the sugar to the plastic bag.
Step 3: Add the melted butter to the plastic bag.
Step 4: Close the bag and massage the graham cracker crumbs with the sugar and the butter until all the crumbs are coated with melted butter.

Collage image showing how to press the graham cracker crumbs into the baking dish.

Step 5: Place a sheet of parchment paper in a 9×13″ baking dish.  Make sure the edges of the paper come up over the sides of the pan. This will help you lift the bars out of the pan later when you cut them into individual pieces.
Step 6:  Use the back of a measuring cup to press the graham cracker crumbs tightly into the bottom of the baking pan. Refrigerate the graham cracker crust for at least one hour.

How to Make the Marshmallow Layer

Collage image showing the steps for how to melt the chocolate and peanut butter and add the mini marshmallows.

Step 7: After the crust has set up in the refrigerator for at least 1 hour, make the chocolate marshmallow mixture. Add the Chocolate Chips and the peanut butter to a medium-sized saucepan.
Step 8: Melt the chocolate chips on medium-low heat, stirring frequently to mix the melted chocolate and the peanut butter. Take the chocolate off the heat when completely melted.  Allow the chocolate to cool for five minutes.
Step 9: Add the Mini Marshmallows to the slightly cooled chocolate mixture.
Step 10: Fold the marshmallows into the chocolate mixture until they are completely covered.

Overhead shot showing how to pour the marshmallow mixture into the 9x13" baking dish.

Step 11: Pour the Chocolate Marshmallow Mixture onto the top of the graham cracker crust.  Put back in the refrigerator and allow the chocolate to harden.

Serving/Storage Instructions

Closeup on two Chocolate Marshmallow Bars sitting on a mound of other cookie bars.

Step 12:  When the chocolate has firmed up, pull the bars out of the pan using the parchment paper. Cut into individual pieces.  Serve at room temperature.  The S’more Bars can be stored in an airtight container for up to a week.  Or can be frozen for up to 3 months.

Closeup on a stack of Chocolate Marshmallow Bars sitting on a white serving platter in front of glass bowls filled with chocolate chips and mini marshmallows.

Other Marshmallow Desserts You Will Love

S'more Bars

Yield 18 bars
Prep Time 20 minutes
Cook Time 5 minutes
Total Time 25 minutes

Our No-Bake Chocolate Marshmallow Bars feature a Chocolate, Peanut Butter, and Marshmallow layer sitting on a bed of buttery Graham Cracker Crust. Sorta like a S’more, only better.

Ingredients

  • 4 cups Semi-Sweet Chocolate Chips
  • 1 cup Peanut Butter (Creamy)
  • 1 bag Mini Marshmallows (16 oz.)
  • 12 Graham Crackers (Full sheets)
  • 1/2 cup Melted Butter (Sweet Cream, Salted)
  • 1/3 cup Granulated Sugar

Instructions

  1. Add the Graham Cracker sheets to a plastic bag. Finely crush them with a rolling pin.  Make sure you get rid of any big chunks.  This will help the crust stick to the marshmallow chocolate layer later.
  2. Add the sugar to the plastic bag.
  3. Add the melted butter to the plastic bag.
  4. Close the bag and massage the graham cracker crumbs with the sugar and the butter until all the crumbs are coated with melted butter.
  5. Place a sheet of parchment paper in a 9x13" baking dish.  Make sure the edges of the paper come up over the sides of the pan. This will help you lift the bars out of the pan later when you cut them into individual pieces.
  6. Use the back of a measuring cup to press the graham cracker crumbs tightly into the bottom of the baking pan. Refrigerate the graham cracker crust for at least one hour.
  7. After the crust has set up in the refrigerator for at least 1 hour, make the chocolate marshmallow mixture. Add the Chocolate Chips and the peanut butter to a medium-sized saucepan.
  8. Melt the chocolate chips on medium-low heat, stirring frequently to mix the melted chocolate and the peanut butter. Take the chocolate off the heat when completely melted.  Allow the chocolate to cool for five minutes.
  9. Add the Mini Marshmallows to the slightly cooled chocolate mixture.
  10. Fold the marshmallows into the chocolate mixture until they are completely covered.
  11. Pour the Chocolate Marshmallow Mixture onto the top of the graham cracker crust.  Put back in the refrigerator and allow the chocolate to harden.
  12. When the chocolate has firmed up, pull the bars out of the pan using the parchment paper. Cut into individual pieces.  Serve at room temperature.

Notes

  The Chocolate Marshmallow Bars can be stored in an airtight container for up to a week.  Or can be frozen for up to 3 months.

Did you Make this Recipe? Leave a review below, then snap a picture and tag @twosisterscrafting on Instagram so we can see it!