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Watermelon-Shaped Rice Krispy Treats Recipe

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4.2 from 53 reviews

These Rice Krispy Treat Watermelon Slices are a fun and colorful twist on the classic rice crispy treats. Crafted to resemble watermelon slices, they feature a green ‘rind’ made from marshmallow and Rice Krispies with green coloring, and a red ‘center’ with red coloring and mini chocolate chips to mimic watermelon seeds. Perfect for summer parties or a delightful kids’ snack.

  • Total Time: 25 minutes
  • Yield: Approximately 10-12 watermelon slice treats

Ingredients

Watermelon Rind

  • 4 cups mini marshmallows
  • 3 Tbsp butter
  • 4 cups Rice Krispies cereal
  • Green gel food coloring, to taste
  • Cooking spray (such as Pam), for greasing pans

Watermelon Center

  • 5 cups mini marshmallows
  • 3 Tbsp butter
  • 5 cups Rice Krispies cereal
  • Red gel food coloring, to taste
  • Mini chocolate chips, for ‘seeds’
  • Popsicle sticks (optional), for serving

Instructions

  1. Prepare the Watermelon Rind Marshmallow Mixture: In a microwave-safe bowl, combine 3 tablespoons butter and 4 cups mini marshmallows. Microwave in 20-second intervals, stirring occasionally, until the marshmallows and butter are completely melted and smooth. Add green gel food coloring a little at a time with a clean toothpick until you achieve the desired green shade. Stir well to combine.
  2. Add Rice Krispies to the Rind Mixture: Add 4 cups of Rice Krispies cereal to the green marshmallow mixture. Stir until the cereal is fully coated and evenly combined.
  3. Form the Watermelon Rind in Pans: Lightly spray cake pans with cooking spray. Divide the mixture in half and press small amounts evenly around the outside edges of both pans. Use a piece of wax paper to firmly press the mixture into shape, forming the rind ring.
  4. Prepare the Watermelon Center Marshmallow Mixture: In another bowl, repeat the marshmallow melting process by heating 3 tablespoons butter with 5 cups mini marshmallows in the microwave until melted. Add red gel food coloring gradually until you reach a vibrant red color. Stir well.
  5. Add Rice Krispies to the Center Mixture: Mix 5 cups Rice Krispies cereal into the red marshmallow mixture until fully coated.
  6. Fill the Watermelon Center: Divide this red mixture in half and place it into the center of the rind in each pan. Use a piece of wax paper to press the center mixture gently but firmly into place, ensuring it fills the middle space snugly.
  7. Cool and Set the Treats: Use a knife to loosen the treats from the pans carefully. Turn them out onto a cutting board and chill in the refrigerator for approximately 15 minutes to firm up.
  8. Cut into Wedges and Add Seeds: After chilling, use a sharp knife to cut the treat into wedge-shaped slices resembling watermelon slices. Press mini chocolate chips point-side down into the red center to simulate watermelon seeds.
  9. Optional Serve on Sticks: For serving, optionally insert popsicle sticks gently into the base of each wedge. If serving without sticks, place a sheet of wax paper between slices to prevent sticking.

Notes

  • Use clean toothpicks when adding gel food coloring to prevent contamination of colors.
  • If you don’t have green or red gel food coloring, liquid food coloring may be used but colors might be less vibrant.
  • Using wax paper to press and shape the mixtures prevents sticking and makes shaping easier.
  • Chilling the treats before cutting ensures cleaner slices and better shape retention.
  • Mini chocolate chips make realistic-looking watermelon seeds, but chocolate sprinkles or similar small dark candies can be substituted.
  • These treats are best enjoyed the day they are made but can be stored in an airtight container at room temperature for 2-3 days.
  • Author: Adeline
  • Prep Time: 15 minutes
  • Cook Time: 10 minutes
  • Category: Snack
  • Method: Stovetop
  • Cuisine: American
  • Diet: Vegetarian