Ingredients
Scale
- ½ cup (1 stick / 113 g) unsalted butter, room temperature
- 1 jar (7 ounces) marshmallow creme (marshmallow fluff)
- 4 ounces cream cheese, room temperature
- 4 cups (500 g) confectioners' sugar
- 1 to 2 tablespoons key lime juice
- 1 teaspoon key lime zest
- 1 pinch kosher salt
- ½ teaspoon vanilla extract
Instructions
- In a stand mixer bowl fitted with the paddle attachment, combine the butter and cream cheese. Beat on medium speed until smooth and creamy, around 2 minutes.
- Add the marshmallow creme and mix thoroughly, making sure to scrape the bowl sides as needed.
- With the mixer on low, gradually incorporate the confectioners’ sugar until the mixture is smooth and well mixed.
- Stir in 1 tablespoon of key lime juice, key lime zest, kosher salt, and vanilla extract until everything is well combined.
- Taste the frosting; if you prefer more citrus flavor, mix in the additional tablespoon of key lime juice to balance sweetness and acidity.
- Increase the mixer speed to medium-high and beat for 1 to 2 minutes until the frosting becomes light and fluffy.
- Spread the frosting immediately onto cakes, cupcakes, cookies, or bars.
Last Step:
Please leave a rating and comment letting us know how you liked this recipe! This helps our business to thrive and continue providing free, high-quality recipes for you.Notes
For optimal fluffiness, ensure your butter and cream cheese are at room temperature before mixing.
Store any leftover frosting in an airtight container in the refrigerator for up to 5 days.
If the frosting becomes too thick, add a splash of milk to reach the desired consistency.
- Prep Time: 10 minutes
- Cook Time: 10 minutes
- Category: Dessert
- Method: Mixing
- Cuisine: American
Nutrition
- Serving Size: 1 tablespoon
- Calories: 110
- Sugar: 17g
- Sodium: 10mg
- Fat: 4g
- Saturated Fat: 2.5g
- Unsaturated Fat: 1.5g
- Trans Fat: 0g
- Carbohydrates: 18g
- Fiber: 0g
- Protein: 1g
- Cholesterol: 20mg