Frankenstein Halloween Rice Krispie Treats

These Halloween Rice Krispie treats are fast, easy and made from just a few store bought ingredients.

  • Author: Claire | The Simple, Sweet Life
  • Prep Time: 20 minutes
  • Setting Time: 30 minutes
  • Cook Time: 10 minutes
  • Total Time: 1 hour
  • Yield: 12 1x
  • Category: Dessert
  • Cuisine: American


Units Scale
  • 6 cups rice krispie cereal
  • One 10oz bag mini marshmallows
  • 4 tbsp unsalted butter
  • 10 oz green candy melts
  • 3 oz black candy melts
  • Royal icing eyes
  • Black jimmies sprinkles


  1. Grease a 9″ x 13″ casserole dish.
  2. In a large pot over low-medium heat, melt the butter.
  3. Add the marshmallows and stir until smooth.
  4. Pour in the rice krispie cereal and, with a spatula, stir until the cereal is evenly coated with marshmallows.
  5. Spoon the mixture into the prepared casserole dish and press until the rice krispies fill the dish and the top is flat.
  6. Allow to set for 30 minutes.
  7. Remove the cooled rice krispie treats from the dish and cut into rectangles of various sizes.
  8. Place a bowl over a small pot of boiling water and add the green candy melts to it.
  9. Stir until melted. If the chocolate is too thick for dipping, adding a teaspoon of vegetable shortening.
  10. Dip the top of each rice krispie treat into the green candy melts and then into the black jimmies sprinkles.
  11. Add two royal icing eyes.
  12. In a small bowl, melt the black candy melts in the microwave using 10 – 15 second increments.
  13. Pour into a piping bag and pipe stitches onto the treats.
  14. Allow to set completely before packaging.


  • Cooking rice krispie treats: Make sure to cook your butter/marshmallows over medium heat and to remove them from the heat immediately once melted to avoid overcooked, hard bars.
  • Keep your kitchen equipment/utensils free of water when melting the chocolate. Getting water in the melting/melted chocolate will cause it to seize.
  • Using chocolate in place of candy melts: If you’d prefer to use chocolate in place of the candy melts, you can use white chocolate with green gel food coloring and dark chocolate with black gel food coloring to replace the green and black candy melts.
  • Don’t have a double boiler? You can melt your chocolate in the microwave using 10 second increments. Just be careful, it’s very easy to over-cook chocolate this way.
  • If the chocolate is too thick: You can thin it by adding a little bit of vegetable shortening. Stir a little bit in, stirring until it’s completely melted and test to see if it’s the consistency you want. A little bit goes a long way.
  • Storage: Rice krispie treats can be stored in an air tight container at room temperature and are best when eaten within three days.


Keywords: halloween rice krispie treats, halloween rice krispie treat recipe, easy halloween treats