If there ever was a dessert that checks every box—zesty, creamy, satisfyingly sweet, and no oven required—it has to be this NO-BAKE LEMON ECLAIR CAKE. A true crowd-pleaser, this delectable treat layers tangy lemon pudding, pillowy cool whip, and crunchy graham crackers, all topped off with a drizzle of luscious lemon frosting. Perfect for warm weather gatherings, potlucks, or just to treat yourself, it’s a breeze to make and even more delightful to eat. Best of all? It gets better as it chills, giving you the kind of dessert everyone hopes there’s still a piece left of… though there rarely is!

Ingredients You’ll Need
What I love about the NO-BAKE LEMON ECLAIR CAKE is how each ingredient has a simple purpose that creates the magic in every bite. These essentials work together to deliver that unique flavor and texture—the combination is truly unbeatable.
- Graham crackers: They create those signature cake-like layers that soak up the lemony pudding while still holding their shape.
- Instant lemon pudding mix: Delivers bold, bright citrus flavor and creamy richness in every layer.
- Milk: This is the magical liquid that brings your pudding to life—be sure to use good, cold milk for best results.
- Cool Whip: Adds that dreamy, cloud-like lightness and helps the pudding set up to the perfect, sliceable texture.
- Lemon frosting: The crowning glory! Sweet, tangy, shiny—just the right finish to tie everything together.
How to Make NO-BAKE LEMON ECLAIR CAKE
Step 1: Prepare Your Pan
Start by spraying the bottom of a 9×13-inch baking dish with a little cooking spray. This simple step makes serving (and cleaning up) completely painless—the first slice comes out just as neatly as the last!
Step 2: Create Your Graham Cracker Base
Lay about one third of your graham crackers, still whole, across the bottom of the dish. Try to cover as much surface area as possible, patching in crumbs if needed. This will become the bottom “crust” that soaks up all that lemon flavor.
Step 3: Mix the Pudding
In a large mixing bowl, pour in the lemon pudding mixes and add the cold milk. Use a hand mixer to beat everything together on medium speed for about 2 minutes until smooth and thickened. Then, gently fold in the Cool Whip—you want those fluffy whites to stay lofty for a light, mousse-like texture.
Step 4: Layer the Pudding Mixture
Next, pour half of your pudding-Cool Whip mixture evenly over the graham crackers. Use a spatula to spread it out, reaching all the edges for complete coverage—no one wants a lemon-less corner!
Step 5: Add More Graham Crackers
Place another layer of whole graham crackers directly on top of the pudding mixture. This keeps the cake structure firm, reminiscent of traditional eclair pastry layers.
Step 6: Repeat the Pudding Layer
Smooth the remaining half of the pudding mixture over your second graham cracker layer. Take your time spreading, pressing it gently into the corners for a flawless finish.
Step 7: Final Graham Cracker Layer
Top everything off with one last glorious layer of graham crackers, making sure you have a solid surface for the grand finale: the frosting!
Step 8: Top with Lemon Frosting
Remove the foil from your lemon frosting container and microwave it uncovered for 30 to 40 seconds. The frosting should be pourable but not boiling hot. Pour it evenly over the cake, coaxing it gently with a spatula so every bit of surface is covered in sweet lemony glaze.
Step 9: Chill to Perfection
Now for the hardest part—waiting. Cover the NO-BAKE LEMON ECLAIR CAKE and refrigerate for at least 12 hours (overnight is truly best). This rest time lets the graham crackers absorb moisture, melting into a soft, cake-like texture and allowing all the flavors to harmonize beautifully.
How to Serve NO-BAKE LEMON ECLAIR CAKE

Garnishes
For a pretty finishing touch, add a sprinkle of finely grated lemon zest or a few thin lemon slices right before serving. A handful of fresh berries or a gentle dusting of powdered sugar adds a pop of color and a bit of tartness to balance out the sweet, creamy layers.
Side Dishes
This vibrant dessert is a centerpiece on its own, but if you want to create an even richer dessert spread for a party, serve it alongside fresh fruit salad, a platter of crisp butter cookies, or even a bubbling pitcher of lemonade for a fun, lemon-themed table.
Creative Ways to Present
Try assembling the NO-BAKE LEMON ECLAIR CAKE in individual clear cups or jars for an adorable single-serve dessert. Or, for extra elegance, cut thick slices and drizzle each plate with a little raspberry coulis or blueberry sauce—your guests will swoon over the colors and flavors!
Make Ahead and Storage
Storing Leftovers
If you’re lucky enough to have leftovers, keep the NO-BAKE LEMON ECLAIR CAKE tightly covered in the refrigerator. The flavors actually get even better over time as everything melds together, but try to enjoy within three days for the freshest taste and texture.
Freezing
You can freeze this cake if you want to prep further in advance. Just wrap tightly in plastic wrap and then foil before freezing, and thaw in the fridge overnight. Be aware that the texture may soften a touch after thawing, but it’s still deliciously creamy and lemony.
Reheating
No reheating is needed, since this is a chilled dessert. Simply slice and serve straight from the fridge for that cool, refreshing burst of lemon goodness.
FAQs
Can I use homemade whipped cream instead of Cool Whip?
Absolutely! Homemade whipped cream is a wonderful substitute for Cool Whip if you want to keep things extra fresh—just whip a cup of heavy cream with a little powdered sugar until stiff peaks form and use it in the same way.
Can I make NO-BAKE LEMON ECLAIR CAKE gluten free?
Yes! Just swap the standard graham crackers for your favorite gluten-free variety. Check labels on the pudding mix and other ingredients as well to make sure they’re certified gluten free.
What if I can’t find instant lemon pudding?
If instant lemon pudding isn’t available, you can use vanilla or white chocolate pudding and add a bit of fresh lemon zest and juice to amp up the citrus notes.
Can I use homemade lemon frosting?
Certainly! If you have a favorite homemade lemon frosting or glaze, you can use that on top instead of canned frosting. Just be sure it’s pourable to get that smooth, even finish.
Can this cake be made in advance?
YES! In fact, NO-BAKE LEMON ECLAIR CAKE is actually better when made a day ahead—the flavor deepens and the texture becomes even more luscious as it sits overnight in the fridge.
Final Thoughts
Few desserts deliver on the promise of jaw-dropping flavor with so little effort, but the NO-BAKE LEMON ECLAIR CAKE proves it can be done! Whether you’re cooking for a crowd or just want a slice of sunshine to brighten your week, you owe it to yourself to give this recipe a try. Enjoy every bite—you might have to hide a piece for yourself before it disappears!
PrintNO-BAKE LEMON ECLAIR CAKE Recipe
This No-Bake Lemon Eclair Cake is a refreshing, crowd-pleasing dessert layered with instant lemon pudding, Cool Whip, and graham crackers, topped with luscious lemon frosting. Quick to assemble and absolutely irresistible, it only gets better the longer it chills in the fridge. Perfect for parties, potlucks, or any time you crave a sweet, zesty treat without turning on your oven.
- Prep Time: 15 minutes
- Cook Time: 0 minutes
- Total Time: 15 minutes (plus 12 hours chilling)
- Yield: 12 servings
- Category: Desserts
- Method: No-cook
- Cuisine: American
- Diet: Vegetarian
Ingredients
Base & Layers
- 1 (14.4-oz) box graham crackers
Lemon Filling
- 2 (3.4-oz) boxes instant lemon pudding
- 3½ cups milk
- 1 (8-oz) container Cool Whip, thawed
Topping
- 1 (16-oz) can lemon frosting
Instructions
- Prepare the Pan – Lightly spray the bottom of a 9×13-inch baking dish with cooking spray to prevent sticking.
- Layer the Graham Crackers – Arrange ⅓ of the whole graham crackers in an even layer to cover the bottom of the pan.
- Make the Lemon Filling – In the bowl of an electric mixer, combine the instant lemon pudding and milk. Beat at medium speed for about 2 minutes until thickened. Gently fold in the Cool Whip until the mixture is smooth and airy.
- Assemble First Layer – Spread half of the lemon pudding mixture evenly over the graham cracker layer.
- Add More Layers – Place another layer of whole graham crackers on top of the filling, followed by the remaining pudding mixture. Finish with a final layer of graham crackers on top.
- Add the Frosting – Remove the lid and foil from the can of lemon frosting. Microwave, uncovered, for 30 to 40 seconds until pourable. Pour evenly over the top graham cracker layer, spreading gently for full coverage.
- Chill the Cake – Cover the pan and refrigerate the cake for at least 12 hours (overnight is best) to allow the layers to soften and flavors meld.
- Serve – Slice and serve chilled. Store any leftovers in the refrigerator.
Notes
- This dessert is best made the night before serving for optimal texture and flavor.
- Be sure to fully thaw Cool Whip before folding it into the pudding mixture.
- You can substitute homemade unsweetened whipped cream for Cool Whip for a less sweet version.
- Store leftovers covered in the refrigerator for up to 3 days.