As I stood in my kitchen, the summer sun streaming through the window, I felt an invigorating wave of inspiration. There’s something truly magical about a dessert that captures the essence of a bright, sunny day, and that’s precisely what these No-Bake Creamy Key Lime Mousse Cups achieve. This delightful recipe takes just 15 minutes to prepare, making it perfect for those weekends when you want something special without spending hours in the kitchen. With a luxurious blend of tangy key lime and creamy mousse, it’s a refreshing treat that’s sure to impress at summer gatherings or provide a sweet escape on a quiet afternoon. The best part? You can customize it to suit your taste, whether you’re adding a crunchy graham cracker base or garnishing it with fresh berries. Curious to learn how to whip up these little gems? Let’s dive into the recipe!

Why choose Key Lime Mousse Cups?
Simplicity is key: With only 15 minutes of prep, you’ll have a stunning dessert ready without the hassle.
Refreshing taste: The perfect balance of tangy key lime and creamy texture brings summer straight to your table.
Customizable options: Feel free to swap out flavors or garnishes, tailoring it to your unique taste – try adding fresh berries or a coconut twist for a delightful twist!
Crowd-pleaser nature: Serving these at a gathering? Expect delighted smiles and requests for the recipe.
No-bake convenience: Enjoy this recipe without needing to turn on the oven, making it ideal for hot days! Want another cool treat? Check out my Bake Key Lime recipe for a fun variation!
Key Lime Mousse Cups Ingredients
• Elevate your dessert game with these key lime mousse cups!
-
For the Mousse
-
Cream Cheese – Adds creaminess and structure; make sure it’s softened for a smooth texture.
-
Sweetened Condensed Milk – Provides essential sweetness and helps the mousse set to perfection.
-
Fresh Key Lime Juice – Delivers that signature tart flavor; regular lime juice works too, but key limes are truly special.
-
Key Lime Zest – Enhances the lime flavor and gives a delightful visual touch.
-
Heavy Whipping Cream – Creates a luxurious, airy texture; whip it until stiff peaks form to maintain its fluffiness.
-
Powdered Sugar – Sweetens the whipped cream mixture and balances the tartness.
-
For the Optional Crust
-
Graham Cracker Crumbs – Adds a delightful texture; you can substitute with crushed cookies or oats if desired.
-
Melted Butter – Binds the crumbs together for a firm base; it can be replaced with coconut oil for a twist.
-
For the Garnish
-
Lime Zest – Adds an extra burst of flavor and color at serving time.
-
Whipped Cream – Enhances creaminess and makes for a beautiful presentation.
-
Mini Lime Slices – Offer a decorative and zesty touch.
-
Crushed Graham – Sprinkled on top for additional texture and visual appeal.
Indulge in these Key Lime Mousse Cups that promise a refreshing escape from the norm!
Step‑by‑Step Instructions for Indulge in Creamy Key Lime Mousse Cups – No-Bake Delight
Step 1: Prep Ingredients
Begin by softening 8 ounces of cream cheese at room temperature for about 30 minutes to ensure a smooth texture. While it softens, zest and juice 3-4 fresh key limes, collecting the zest and juice separately. Prepare your serving cups, whether they’re small ramekins or glass jars, and set them aside for easy assembly later.
Step 2: Make Mousse Base
In a mixing bowl, combine the softened cream cheese, 1 cup of sweetened condensed milk, the freshly squeezed key lime juice, and 1 tablespoon of key lime zest. Using an electric mixer, beat the mixture on medium speed until it becomes creamy and well-blended, about 2-3 minutes. The mousse base should be smooth with no lumps before moving to the next step.
Step 3: Whip Cream
In a separate bowl, pour in 1 cup of heavy whipping cream and sprinkle with 2 tablespoons of powdered sugar. Whip the cream using an electric mixer on high speed for about 4-5 minutes, until it reaches stiff peaks. The cream should hold its shape when you lift the whisk, creating a fluffy texture that will elevate your Key Lime Mousse Cups.
Step 4: Combine Mixtures
Gently fold the whipped cream into the mousse base using a spatula. Be careful not to deflate the whipped cream; aim for a light and airy texture. Continue folding until fully incorporated, ensuring the fluffy white cream is evenly mixed with the creamy lime base for a delightful mousse consistency.
Step 5: Portion and Chill
Spoon or pipe the luscious mousse mixture into your prepared serving cups, filling them about three-quarters full for the perfect portion. Cover the cups loosely with plastic wrap and refrigerate for at least 2-4 hours to set. This chilling time allows the flavors to meld beautifully while creating that ideal mousse texture.
Step 6: Garnish
When ready to serve your Indulge in Creamy Key Lime Mousse Cups, carefully remove the plastic wrap. Top each cup generously with whipped cream, then sprinkle with a little extra lime zest for a pop of color. For a finishing touch, add mini lime slices on top, making them as charming as they are delicious!

What to Serve with Key Lime Mousse Cups
Looking to create the perfect dining experience with your light and refreshing dessert?
-
Fresh Berries:
Juicy strawberries, blueberries, or raspberries add a pop of color and a burst of flavor that complements the tartness of the mousse. -
Mint Tea:
A soothing mint tea provides a calming contrast that enhances the lime flavor while refreshing your palate on a warm day. -
Coconut Macaroons:
These chewy, sweet cookies offer a delightful texture contrast and a tropical flavor that pairs beautifully with key lime. -
Watermelon Feta Salad:
The sweet juiciness of watermelon, paired with salty feta cheese, brightens the meal while encouraging a clean dessert finish. -
Tropical Fruit Salad:
Combine fresh pineapple, mango, and kiwi for a vibrant fruit medley that echoes the refreshing vibes of the mousse. -
Chocolate-covered Almonds:
The rich, nutty flavor is an indulgent yet crunchy contrast, creating a delightful tension with the mousse’s airy texture. -
Sparkling Wine:
A cold glass of bubbly adds a celebratory touch to your dessert and enhances its citrus notes, making every bite feel like a special occasion. -
Lemon Sorbet:
This light and tangy sorbet refreshes the palate between bites and echoes the citrus themes of the mousse for a harmonious pairing.
How to Store and Freeze Key Lime Mousse Cups
Fridge: Store any leftover Key Lime Mousse Cups in an airtight container in the refrigerator for up to 3 days to keep them fresh and creamy.
Freezer: If you’re looking to save some for later, freeze the mousse in individual portions for up to 1 month. Just be sure to use freezer-safe containers.
Thawing: To enjoy frozen mousse, thaw it in the refrigerator overnight and give it a gentle stir before serving to restore its creamy texture.
Garnishing: Add your garnishes, like whipped cream and lime slices, just before serving to maintain freshness and visual appeal.
Expert Tips for Key Lime Mousse Cups
-
Room Temperature Cream Cheese: Be sure to soften your cream cheese for about 30 minutes; this prevents lumps and ensures a smooth mousse texture.
-
Stiff Peaks Matter: When whipping the cream, stop at stiff peaks to avoid graininess in your mousse. This will keep it light and airy.
-
Chill Time is Key: Let the mousse chill for at least 4 hours for optimal texture. Rushing this step can leave you with a softer mousse than desired.
-
Balance Flavors: Add a tiny pinch of salt to enhance the sweetness of the Key Lime Mousse Cups, which balances the tartness beautifully.
-
Fresh Garnishes Only: Add your garnishes right before serving; this maintains their freshness and visual appeal, making your dessert even more inviting.
Indulge in Creamy Key Lime Mousse Cups
Get ready to make this delightful dessert your own with some fun twists to elevate the flavor profile!
-
Dairy-Free: Substitute heavy cream with coconut cream for a rich and tropical mousse experience. Coconut flavor pairs beautifully with lime, creating a dreamy dessert.
-
Citrus Swap: Try using lemon or orange juice instead of key lime for a refreshing twist. Each citrus brings its unique charm to the dessert, perfect for those who enjoy experimenting with flavors.
-
Berry Layers: Layer in fresh berries like strawberries or blueberries between the mousse for added color and a burst of flavor. The sweetness of the berries beautifully complements the tartness of the mousse.
-
Nutty Textures: Incorporate chopped nuts such as almonds or pecans into the mousse for a delightful crunch. This twist not only adds texture but also a nutty flavor that pairs well with lime.
-
Chocolate Drizzle: Top with a drizzle of melted dark chocolate for an indulgent treat. The richness of the chocolate balances the tartness of the lime, creating a luxurious dessert.
-
Herb Infusion: Add a hint of fresh mint or basil for an aromatic twist. A few finely chopped leaves folded into the mousse can add a surprising depth of flavor.
-
Frozen Delight: Pour the mousse mixture into popsicle molds instead of cups for a refreshing frozen treat! Perfect for those hot summer days when you want something light and cool.
-
Sugar Alternatives: Replace the powdered sugar with honey or maple syrup for a natural sweetener option. Just adjust to taste for the desired sweetness—go ahead and explore your preferences!
And while you’re at it, why not indulge in some cooling summer treats like my Green Goddess Pasta or make a splash with some delightful Bake Patriotic Hot dessert? Enjoy customizing your Key Lime Mousse Cups!
Make Ahead Options
These No-Bake Creamy Key Lime Mousse Cups are perfect for busy weeknights or entertaining, allowing you to prep in advance for stress-free serving. You can make the mousse mixture up to 24 hours ahead; simply prepare everything as directed, then spoon the mousse into the cups and cover tightly with plastic wrap before refrigerating. The mousse will hold its flavor and creamy texture beautifully, so you can enjoy just as delicious results! When you’re ready to serve, add the whipped cream and garnishes just before enjoying to keep everything fresh and vibrant. With these make-ahead tips, you’ll impress your guests without the last-minute rush!

Key Lime Mousse Cups Recipe FAQs
How do I choose the right key limes?
Absolutely! When selecting key limes, look for small, firm limes with a glossy skin. Avoid any with dark spots or blemishes, as these may indicate overripeness. For the best flavor, opt for limes that feel heavy for their size, as they typically have more juice.
What’s the best way to store leftovers?
You can store any leftover Key Lime Mousse Cups in an airtight container in the refrigerator for up to 3 days. Ensure the lid is secure to maintain freshness. The mousse should be kept chilled until ready to enjoy, and remember to add garnishes just before serving to keep them looking wonderful!
Can I freeze Key Lime Mousse Cups?
Yes, you can freeze the mousse! Simply transfer individual portions into freezer-safe containers. The mousse will keep well for up to 1 month. When you’re ready to enjoy, thaw it overnight in the refrigerator, then give it a gentle stir to restore that creamy texture.
What if my mousse isn’t setting properly?
If your mousse isn’t setting as desired, it may be due to insufficient chilling time or not incorporating the whipped cream properly. Make sure to chill for at least 4 hours, and when combining the mixture, gently fold the whipped cream to maintain its airy consistency. If it’s still too soft, consider incorporating a bit more whipped cream next time for added stability.
Are there any dietary considerations I should know?
Very much! For a dairy-free version, you can substitute heavy whipping cream with coconut cream and use dairy-free cream cheese. If you’re catering to those with allergies, double-check that all ingredients, like sweetened condensed milk, are suitable. It’s always wise to consult with guests regarding dietary restrictions before serving.
How should I garnish my mousse cups?
For that perfect finishing touch, add garnishes just before serving. A dollop of freshly whipped cream, a sprinkle of lime zest, and a mini lime slice on top not only enhance the flavor but also make your Key Lime Mousse Cups visually appealing. I often recommend crushed graham crackers for an extra crunch—it creates a lovely contrast with the creamy mousse!

Indulge in Creamy Key Lime Mousse Cups – Your No-Bake Dream
Ingredients
Equipment
Method
- Begin by softening 8 ounces of cream cheese at room temperature for about 30 minutes.
- In a mixing bowl, combine the softened cream cheese, 1 cup of sweetened condensed milk, and the freshly squeezed key lime juice with 1 tablespoon of key lime zest. Beat until smooth.
- In a separate bowl, whip 1 cup of heavy whipping cream with 2 tablespoons of powdered sugar until stiff peaks form.
- Gently fold the whipped cream into the mousse base until well incorporated.
- Spoon the mousse mixture into prepared serving cups, filling them 3/4 full. Cover and refrigerate for at least 4 hours.
- Before serving, top each cup with whipped cream, lime zest, and mini lime slices.

Leave a Reply