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5 from 1 vote

Indoor S'mores And Marbled Marshmallow Recipe

I finally have the perfect marshmallow recipe and some good tips for making these giant homemade marbled marshmallows! Topped with a classic HERSHEY’s Milk Chocolate and instead of a traditional graham cracker, try a thin cookie instead… you can’t go wrong!
Prep Time20 mins
Cook Time10 mins
rest6 hrs
Total Time30 mins
Course: Dessert, Snack
Cuisine: American
Servings: 16 servings
Calories: 240kcal
Author: Eden


  • 3/4 ounce unflavored gelatin 3 packets
  • 1.5 cups sugar
  • 1 cup light corn syrup
  • 1/4 tsp salt
  • 1 tbsp pure vanilla
  • 1 cup water
  • Red and blue food coloring


  • 6 6 or 8x8 baking pan
  • candy thermometer
  • whisk
  • mesh strainer
  • medium sauce pan
  • small bowl
  • measuring cups
  • electric mixer


Marbled Marshmallow

  • Prepare the baking pan by rubbing a little vegetable oil on the bottom and sides.
  • Sift a good amount of powdered sugar all over the bottom and sides until fully coated, at least 1/8th of an inch.
  • In a medium sauce pan attached with a candy thermometer, add .5 cup of cold water, 1.5 cup sugar and 1 cup light corn syrup. Stir well bring to the boil on high. Stir often
  • Bring the sugar mixture to 240 degrees (soft ball) on a candy thermometer. Watch very carefully so it's exactly 240 degrees. Once it reaches 240, turn heat to low.
  • In a small bowl, which attachment and whisk on high.
  • Carefully add in the very hot sugar mix into the mixer while it's whisking.
  • Beat on high for 10 to 15 minutes until thick, but still able to spread.
  • Once they are fully done whisking, add in 8 drops of red food coloring and 8 drops of blue. Give it one whisk only.
  • Then add in a few more drops and leave them, they will spread when you pour the mixture.
  • Pour the marshmallow mix into the prepared baking pan and smooth with a spatula. If you need more color, add in a few drops of food coloring on the top and marble gently with a knife.
  • Add a nice layer of powdered sugar onto the top and push the marshmallows into the pan.
  • Let them sit out, uncovered for 6 to 8 hours!
  • Use a little powdered sugar on a knife to cut them into large squares. Toast and sandwich between some chocolate cookies. Enjoy!


Calories: 240kcal | Carbohydrates: 53g | Protein: 2g | Fat: 3g | Saturated Fat: 1g | Cholesterol: 1mg | Sodium: 217mg | Potassium: 50mg | Fiber: 1g | Sugar: 42g | Calcium: 10mg | Iron: 1mg