Go Back
+ servings
Key Lime Pie Marshmallows
Prep Time
15 mins
Cook Time
5 mins
Cooling Time:
3 hrs
Total Time
3 hrs 20 mins

These no-bake dessert treats are just bursting with bright citrus flavor! Just like your favorite summer slice of key lime pie, in marshmallow form!

Course: Dessert, Snack
Cuisine: American
Keyword: key lime marshmallows, key lime pie marshmallows
Servings: 15
Calories: 138 kcal
  1. Lightly mist a loaf pan with non-stick spray, and line with parchment.

  2. Place the key lime juice in a large mixing bowl, and sprinkle the powdered gelatin on top. Set aside and allow to soften.

  3. Combine the sugar, corn syrup, water, and salt in a medium saucepan, and set over medium-high heat. Allow the mixture to come to a boil, swirling the pot occasionally (do not stir). Attach a candy thermometer to the side of the pot, and keep the mixture at a low boil until it reaches 238 degrees F.

  4. Slowly and carefully pour the hot syrup over the key lime/gelatin mixture, while whipping at medium speed.
  5. Increase the speed to high and continue to whip until the marshmallow is stiff, glossy, and white.

  6. Stir in the vanilla extract and lime zest.

  7. Pour into the prepared pan and allow to set for 3 hours, or overnight.
  8. Turn the marshmallow out onto a cutting board, peel away the parchment, and use a sharp knife (misted with non-stick spray) to cut into 2-inch squares.

  9. Toss the marshmallows in graham cracker crumbs, toasted coconut, or powdered sugar, and enjoy!
Nutrition Facts
Key Lime Pie Marshmallows
Amount Per Serving
Calories 138 Calories from Fat 9
% Daily Value*
Fat 1g2%
Saturated Fat 1g6%
Sodium 50mg2%
Potassium 11mg0%
Carbohydrates 34g11%
Fiber 1g4%
Sugar 32g36%
Protein 1g2%
Vitamin C 2mg2%
Calcium 5mg1%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.