Key lime ice cream is a refreshing, tangy treat that captures the essence of classic key lime pie in creamy, frozen form. Using the Ninja Creami, you can easily whip up a batch of this zesty dessert at home with just a handful of ingredients and minimal effort. The result is a perfectly smooth, tart, and sweet ice cream that’s ideal for hot days or whenever you crave a citrusy pick-me-up.
Ingredients
- 1 cup (240 ml) whole milk
- 1 cup (240 ml) heavy cream
- 3/4 cup (150 g) granulated sugar
- 1/2 cup (120 ml) bottled key lime juice (or fresh, if available)
- 2 teaspoons key lime zest (about 2-3 key limes)
- 1 teaspoon pure vanilla extract
- 1/8 teaspoon fine sea salt
- Optional: 1/4 cup (60 g) sweetened condensed milk for extra creaminess
Instructions
- Mix the base: In a medium bowl, whisk together the whole milk, heavy cream, and sugar until the sugar is fully dissolved. This may take 1-2 minutes of steady whisking.
- Add flavorings: Stir in the key lime juice, key lime zest, vanilla extract, and salt. If you want a richer, silkier texture, add the sweetened condensed milk at this stage and mix until completely combined.
- Transfer to Ninja Creami pint: Pour the ice cream base into a Ninja Creami pint container, ensuring you do not fill past the max fill line. Secure the lid tightly.
- Freeze: Place the pint container upright in your freezer and freeze for at least 24 hours. The base must be completely solid for the Ninja Creami to process it into ice cream.
- Process in Ninja Creami: Remove the pint from the freezer. Install the pint into the Ninja Creami outer bowl as per manufacturer instructions. Lock in place and select the “Ice Cream” function. Let the machine run its full cycle.
- Check texture: After the first spin, check the texture. If the ice cream is crumbly or powdery, reinsert and run the “Re-spin” function once or twice until it’s smooth and creamy.
- Optional mix-ins: If you like, use the “Mix-In” function to fold in crushed graham crackers, white chocolate chips, or bits of meringue for a pie-like experience.
- Serve: Scoop into bowls or cones and enjoy immediately, or transfer to a storage container and freeze for later.
Tips
- Substitutions: If you can’t find key lime juice, use regular lime juice, but add an extra teaspoon of zest to boost the citrus flavor. For a dairy-free version, substitute canned coconut milk for the milk and cream.
- Sugar adjustments: If you prefer a less sweet ice cream, reduce the sugar to 1/2 cup. Note that less sugar can make the texture slightly icier.
- Don’t skip the freeze: The base must be frozen solid. Processing a partially frozen base will yield a soupy or slushy texture rather than creamy ice cream.
- Storing leftovers: For best texture, cover the surface of leftover ice cream with plastic wrap before sealing the container to minimize ice crystals.
Serving Suggestions
- Top with crushed graham crackers or shortbread cookies for a nod to key lime pie.
- Garnish with fresh lime zest and a dollop of whipped cream for extra flair.
- Pair with fresh berries such as raspberries or strawberries to balance the tartness.
- Serve in a waffle cone for added crunch and sweetness.
Variations
- Key Lime Pie Ice Cream: After the initial spin, add 1/3 cup crushed graham crackers and use the Mix-In setting to distribute. Swirl in a few tablespoons of marshmallow fluff for a pie-like finish.
- Dairy-Free Version: Replace the milk and cream with two cans (13.5 oz each) of full-fat coconut milk. Use coconut condensed milk for the sweetened condensed milk option.
- Greek Yogurt Swirl: After spinning, fold in 1/2 cup vanilla Greek yogurt for a tangy, creamy swirl reminiscent of frozen yogurt.
- Mint Key Lime Ice Cream: Add 1/4 teaspoon peppermint extract to the base for a refreshing, mojito-inspired twist.
- Key Lime Sorbet: Omit the dairy entirely and blend 1 1/2 cups water, 3/4 cup sugar, 3/4 cup key lime juice, and zest. Freeze and process as above for a tart, refreshing sorbet.
Storage and Reheating
Store your Ninja Creami key lime ice cream in an airtight container in the freezer for up to 2 weeks for best texture and flavor. After this, the ice cream may develop some ice crystals or lose its creamy consistency. If the ice cream is too firm straight from the freezer, let it sit at room temperature for 5-10 minutes before scooping. Do not microwave or attempt to reheat; simply allow it to soften naturally. If you have stored the ice cream for a while and it has become icy, you can place it back in the Ninja Creami and use the Re-spin function to restore its creamy texture.
Frequently Asked Questions
- Can I use bottled key lime juice instead of fresh?
- Yes, bottled key lime juice works well and is often more convenient than juicing fresh key limes. Just make sure to use a high-quality, 100% key lime juice for the best flavor. If you can find fresh key limes, they add a brighter, more aromatic zest, but bottled juice is a great alternative and is what many home cooks use.
- Why do I need to freeze the base for 24 hours?
- The Ninja Creami requires a completely frozen base to create the smooth, creamy texture characteristic of churned ice cream. Freezing for less than 24 hours may result in a slushy or uneven consistency, as the machine is designed to shave and blend solid blocks of ice cream base.
- Can I double the recipe?
- You can double the ingredients to make two pints at once, but do not overfill a single Ninja Creami pint container. Each container should be filled only to the max fill line to ensure proper freezing and processing. If you want to make more, prepare multiple pints and freeze them separately.
- What if my ice cream is too tangy or too sweet?
- If you find the finished ice cream too tangy, reduce the amount of key lime juice slightly in your next batch or increase the sugar by a tablespoon or two. Conversely, if it is too sweet, cut back on the sugar or add a bit more lime juice. Be sure to taste the base before freezing, as flavors are slightly muted when frozen.
- How can I get a creamier texture?
- For ultra-creamy ice cream, add the optional sweetened condensed milk, which adds both sweetness and a silky texture. Using full-fat dairy helps prevent iciness. If your ice cream is still crumbly, use the Re-spin function on the Ninja Creami until it becomes smooth.
- Can I add mix-ins like cookies or fruit?
- Yes, the Ninja Creami has a Mix-In function specifically for this purpose. After the initial spin, add your desired mix-ins (such as crushed graham crackers, white chocolate chips, or even small pieces of fruit) and use the Mix-In setting to gently incorporate them without breaking them down too much.