Key Lime Pie Rice Krispie Treats

Key Lime Pie Rice Krispie Treats: A Zesty Twist on a Classic Favorite

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Indulge in the tangy sweetness of Key Lime Pie Rice Krispie Treats, a delightful fusion of two beloved desserts. With the zesty flavor of key limes and the crispy goodness of Rice Krispies cereal, these treats are sure to become a new favorite in your dessert repertoire. Join us as we unlock the secrets to creating this mouthwatering confection that will leave your taste buds tingling with delight.


  • 6 cups Rice Krispies cereal
  • 1 bag (10 oz) mini marshmallows
  • 1/4 cup unsalted butter
  • Zest of 3 key limes
  • 1/4 cup key lime juice (from about 6-8 small key limes)
  • Pinch of salt
  • Optional: 1 teaspoon of key lime or vanilla extract for extra flavor
  • White chocolate, melted (for drizzling)
  • Graham cracker crumbs (for topping)


1. Prepare the Marshmallow Mixture:

  • In a large saucepan, melt the butter over medium heat. Add the mini marshmallows and stir until completely melted and smooth.
  • Stir in the key lime zest, key lime juice, and a pinch of salt until well combined. For extra flavor, add a teaspoon of key lime or vanilla extract if desired.

2. Combine with Rice Krispies:

  • Remove the saucepan from heat and quickly stir in the Rice Krispies cereal until evenly coated with the marshmallow mixture.

3. Press into Pan:

  • Transfer the mixture into a greased 9×13-inch baking dish. Use a spatula or wax paper to press the mixture firmly and evenly into the pan.

4. Chill and Drizzle:

  • Allow the Rice Krispie treats to cool and set in the refrigerator for at least 30 minutes.
  • Once set, drizzle melted white chocolate over the top of the treats and sprinkle with graham cracker crumbs for added texture and flavor.

5. Serve and Enjoy:

  • Cut the treats into squares and serve immediately. Store any leftovers in an airtight container at room temperature for up to several days.

Cook’s Notes and Variations:

  • Key Lime Substitute: If key limes are not available, you can use regular limes as a substitute. However, keep in mind that key limes have a more intense and aromatic flavor.
  • Customized Toppings: Get creative with your toppings by adding crushed graham crackers, shredded coconut, or lime zest for an extra burst of flavor and texture.
  • Texture Adjustment: For a softer and chewier texture, reduce the amount of Rice Krispies cereal used. Conversely, for a crispier texture, increase the cereal quantity slightly.Frequently Asked Questions (FAQs):

Q: Can I use lime juice from a bottle instead of fresh key limes? A: While fresh key lime juice is recommended for the best flavor, you can use bottled lime juice as a substitute if fresh key limes are not available. Just be sure to adjust the quantity to taste.

Q: Can I make these treats ahead of time? A: Yes, you can prepare the Key Lime Pie Rice Krispie Treats ahead of time and store them in an airtight container at room temperature until ready to serve. However, for optimal freshness, it’s best to enjoy them within a few days of preparation.

Q: Can I freeze these treats? A: Yes, you can freeze the Key Lime Pie Rice Krispie Treats for longer storage. Wrap the individual squares tightly in plastic wrap and place them in an airtight container or freezer bag. Thaw them in the refrigerator before serving.

Q: Are these treats gluten-free? A: Yes, as long as you use gluten-free Rice Krispies cereal, these treats can be made gluten-free. Be sure to check the labels of all ingredients to ensure they are gluten-free if you have dietary restrictions.

Keto and Low-Carb Versions:


  • Almond Flour Base: Substitute the Rice Krispies cereal with almond flour or crushed almonds for a keto-friendly version of the treats.
  • Sugar-Free Sweeteners: Use sugar-free marshmallows and white chocolate sweetened with erythritol or stevia to reduce the carb content.


  • Coconut Flakes: Replace some of the Rice Krispies cereal with unsweetened coconut flakes to lower the carb content while adding a hint of tropical flavor.
  • Nut Butter Addition: Incorporate a tablespoon of almond or peanut butter into the marshmallow mixture for added richness and protein.

Elevate your dessert game with Key Lime Pie Rice Krispie Treats, a zesty and irresistible twist on a classic favorite. With their refreshing citrus flavor and crispy texture, these treats are sure to brighten any occasion and leave a lasting impression on your taste buds. Whether enjoyed as an afternoon snack or a sweet indulgence after dinner, these delightful treats are a delicious way to satisfy your cravings for something sweet and tangy. So gather your ingredients, unleash your creativity, and get ready to savor the tropical goodness of Key Lime Pie Rice Krispie Treats!

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