Key Lime Lush (No-Bake Layered Dessert)

This Key Lime Lush is a no-bake layered dessert with a buttery graham cracker crust, a smooth cream cheese layer, and a bright, tangy key lime filling that sets up beautifully without baking. It’s clean, simple, and all about real flavor and texture.

Each layer does its job. You’ve got the crisp, buttery base, a smooth cream cheese layer for structure, a bright key lime filling that brings the tangy, sweet flavor, and a light whipped topping to finish it off.

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This no-bake Key Lime Lush recipe is perfect for summer gatherings, potlucks, and easy make-ahead desserts.

This is one of those desserts I come back to over and over. It’s easy to throw together, sets up beautifully, and the flavor is just right. I’ve made plenty of lush-style desserts, and this one always gets finished. It’s the kind of recipe you keep around for when you need something simple that still feels like you put in the effort.

Why You’ll Love This

• No-bake and easy – No oven required, mix, layer, and chill.
• Bright, real key lime flavor – Tangy without being overpowering.
• Clean, sliceable layers – Holds together beautifully once chilled.
• Great for make-ahead – Actually better after a few hours in the fridge.
• Crowd-friendly – Feeds a group and travels well.

Check out some of our other favorite dessert recipes: Chewy Chocolate Chip Cookies, Limoncello Tiramisu, Berry Poke Cake, Easy Chewy Snickerdoodle Bars, Strawberry Shortcake Recipe From Scratch, Easy Southern Peach Pie Recipe, and Easy Key Lime Pie (Eggless).

Ingredients Needed

Crust

• Graham cracker crumbs – The base that holds everything together.
• Granulated sugar – Adds a little sweetness to balance the crust.
• Unsalted butter (melted) – Binds the crust and gives it that classic richness.

Cream Cheese Layer

• Cream cheese (softened) – Provides structure and a slight tang.
• Granulated sugar – Sweetens while keeping the texture smooth.
• Vanilla extract – A flavor enhancer, deepening sweetness and balancing the richness of cream cheese.
• Whipped topping (or whipped cream) – Lightens the layer so it’s not dense.

Key Lime Layer

• Sweetened condensed milk – Sweet, thick, and creamy base.
• Key lime juice – The star flavor, bright and tart.
• Key lime zest – Boosts the citrus flavor without extra liquid.
• Sour cream – The sour cream brings balance to the sweetness of the condensed milk and gives the lime layer a softer, more natural tang.

Topping

• Whipped topping (or stabilized whipped cream) – Light, fluffy finish.
• Lime zest or slices (optional) – Adds color and visual appeal.

How to Make Key Lime Lush

Step 1: Grease a 9×13 baking dish with butter or non-stick spray. Combine the graham crackers, granulated sugar, and melted butter in a medium bowl. Press the crumb mixture firmly and evenly into the prepared pan. Place it in the freezer while you prepare the next layer.

Step 2: In a large bowl, beat the cream cheese, granulated sugar, and vanilla extract with an electric hand mixer until smooth and well combined. Fold in 8 ounces of whipped cream topping until thoroughly combined. Spread the cheesecake filling over the graham cracker crust, reaching the edges. Freeze while you prepare the next layer.

Step 3: In a separate large bowl, whisk together the sweetened condensed milk and sour cream until combined. Add the lime zest and key lime juice and whisk until combined. The mixture will be smooth and slightly thickened. Spread the key lime layer over the cheesecake layer, all the way to the edges.

Step 4: Spread the remaining container of Cool Whip over the top, cover, and refrigerate for at least 6 hours up to overnight before serving.

Step 5: Garnish with additional key lime zest or slices and serve.

Tips for the Best Key Lime Lush

• Use fresh key lime juice if possible for the best flavor in this dessert. You will need the key lime zest anyway, so just squeeze those for the 1/4 cup of juice required.
• Don’t skip the zest – it makes a noticeable difference.
• Don’t overwork the lime layer – Whisk just until combined—overmixing can thin the filling and affect how it sets.
• Be sure the cream cheese is softened to avoid lumps. Leave at room temperature for at least 1 to 2 hours.
• Use full-fat cream cheese for better texture and stability.
• If using sheets of graham cracker cookies, place them in the food processor and pulse on high until they are fine crumbs.
• Use an offset spatula for even layers that spread to the edges of the pan.
• Lush desserts are perfect make-ahead desserts! They are best when chilled overnight. So, plan to allow for the refrigeration chill time.
• To achieve clean slices, run a sharp knife under warm water, slice, and wipe clean after each cut.
• Storing – This layered dessert should be covered tightly and stored in the refrigerator for up to 3 days.

Variations

• Regular lime works – If you can’t find key limes, standard limes are fine, but a little more tart.
• Homemade whipped cream – Use stabilized whipped cream instead of store-bought.
• Shortbread crust – Swap graham crackers for crushed shortbread cookies, Golden Oreo cookies, or vanilla wafers.
• Coconut twist – Add toasted coconut between layers or on top.
• Extra tangy – Increase lime zest slightly for a stronger citrus flavor.

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