Lemon Icebox Cake

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This Lemon Icebox Cake recipe is easy to make, delicious, and perfect for really any occasion. With just a handful of ingredients and minimal prep work, this cake is a breeze to put together. But don’t let its simplicity fool you–the combination of sweet lemon pudding with buttery shortbread cookies is nothing short of amazing!

Try some of our other favorite Icebox Cakes like this S’mores Icebox CakePistachio Icebox Cake, or Oreo Icebox Cake.

Image of a slice of Lemon Icebox Cake

Lemon Icebox Cake

Icebox cakes are a beloved classic dessert enjoyed for generations, and it’s easy to see why. These desserts are refreshing, light, and oh, so delicious! The best part? They’re incredibly simple to make and taste like you’ve spent hours in the kitchen. What sets these interesting cakes apart is their unique layering technique. They’re a combination of cookies or crackers and layers of creamy pudding or whipped cream. The dessert is then chilled in the fridge, allowing the cookies or crackers to soften and absorb the flavors of the pudding or cream, resulting in thin cake-like layers that are irresistible.

This particular Lemon Icebox Cake recipe is made with Loorna Doone® shortbread cookies, which become soft and cake-like when layered with the lemon pudding mixture. The sweet and tangy lemon flavor is the perfect complement to the buttery richness of the shortbread cookies, and whipped topping adds the perfect sweet finishing touch–it’s simply irresistible.

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Lorna Doone cookies are sweet, crispy shortbread cookies originally sold by Nabisco, which is now a part of  Mondelez International. But how did that name come about? Lorna Doone is the title of a novel by Richard Doddridge Blackmore in 1869. It was so popular at the time that Nabisco capitalized on the fad. Kind of like merchandising from kids’ movies–Nabisco knew that anything with Lorna Doone on the package would be a hot seller!

Whether you’re looking for a quick and easy dessert for a summer barbecue or a special treat for a dinner party, this Lemon Icebox Cake is sure to be a hit! Plus, it can be made ahead of time, making it the perfect dessert to serve when you’re short on time or need to feed a crowd.

Ingredient shot-- image of all the ingredients used in this recipe

Trademark disclaimer: This recipe refers to some trademarked brands: Lorna Doone, Jell-O, Cook Whip, TruWhip and Sonic. We use these names for two reasons. 1) They’re high-quality products that we use in our test kitchens and 2)they create instant name recognition to illustrate steps in the recipe process. We respect trademarks and branding!

Lemon Icebox Cake Ingredients

Here is a breakdown of the ingredients in this Lemon Icebox Cake:

  • Lorna Doone® shortbread cookies: These cookies are used as the base of the cake and provide a sweet, buttery flavor. They soften when layered with the pudding mixture, turning to become a cake-like consistency. See the “quick tip” box below.
  • Instant lemon pudding: This is the main flavor component of the cake and provides a tangy, citrusy taste. The instant pudding mix is used for convenience and is easily mixed with milk to create a smooth, creamy texture. Use two boxes of regular instant pudding mix (not sugar-free, not low-fat) of instant pudding mix–not the cook-and-serve type. The other thing to keep an eye out for is the pudding box size. There are typically two sizes — a larger and a smaller one. We want to get the small 3.4-ounce box. When using the pudding mix, follow my specific recipe directions — don’t prepare it according to package instructions. Use Jell-o® brand for the best flavor (not sponsored).
  • Milk: We recommend using whole milk, to create a thick, creamy custard with a rich flavor.
  • Frozen whipped topping: Whipped topping adds a light texture to the cake and provides a creamy, cool contrast to the tangy lemon flavor. Cool Whip® is a common brand of frozen whipped topping that we use in our test kitchen. Be sure to grab regular, not sugar-free/reduced-fat which can become watery.

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While we highly recommend using 2 boxes of Loorna Doone shortbread cookies for this recipe, we understand that it can be a bit pricey. If you’re looking for a more budget-friendly option, graham crackers can be used as a substitute.

Process shots of Lemon Icebox Cake-- process shots of the pudding mixes and milk being combined and then whipped topping being mixed into it

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Whipped Topping Options

This Lemon Icebox Cake calls for one 8-ounce container of Cool Whip. If you’d like a healthier alternative, you can try TruWhip®. Or make your own whipped topping (recipe below) to use in place of the container of frozen whipped topping. Just FYI, Cool Whip is a non-dairy product, and of course, that isn’t the case with the homemade version.

  • 1 cup heavy cream
  • 1/2 cup powdered sugar
  • 1/2 teaspoon vanilla extract

In a mixing bowl attached to a stand mixer (with a whisk attachment) add 1 cup heavy cream, 1/2 cup powdered sugar, and 1/2 teaspoon vanilla extract. Beat to combine and then increase the speed and whip until firm peaks form, about 2-4 minutes. Now you’ve got homemade whipped topping to use in this recipe!

Process shots-- images of the cookies being unwrapped and layered in the pan and then the lemon spread being spread in

How To Make Lemon Icebox Cake:

  • Chill overnight: It’s important to let the cake chill in the fridge overnight to allow the cookies to soften and absorb the flavors of the pudding mixture. Since the cookies are thick, they need a bit more chilling time than most icebox cakes.
  • Break cookies to fit pan: The shortbread cookies might not fit perfectly in the pan, so it’s okay to break them up into smaller pieces to fit. Don’t worry– they will still turn into a cake-like layer after they’ve softened.
  • Grate lemon zest: For a finishing touch, you can grate some lemon zest on top of the cake before serving. It adds a bright, citrusy flavor and makes the cake look extra pretty.
  • Customize the flavors: You can experiment with different flavors of pudding mix or try adding fresh fruit like sliced strawberries, raspberries, or blueberries between the layers for some added sweetness, color, and texture.
  • Use a sharp knife: When cutting the cake, use a sharp chef’s knife and make decisive cuts. For clean slices, run the knife under warm water, dry it on a kitchen towel, make a cut, and then repeat for each subsequent cut.

Process shots of Lemon Icebox Cake-- images of the remaining layers being added in with a whipped topping being added on top

STORAGE

Lemon Icebox Cake Storage

Lemon Icebox Cake is the perfect choice to make ahead of time since the shortbread cookie layers need time to soften. Eat the cake on days 2, 3, or 4. It may become watery after that.

To store the cake, serve it directly from the fridge. Return any leftovers to the fridge promptly.

This cake isn’t a good choice for freezing and thawing. It contains a lot of dairy, which can cause it to become grainy and watery upon thawing.

Image of a slice of the dessert with a bite out of it

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Here’s our favorite 8×8-inch pan to make this cake in. These parchment paper sheets are a game changer for lining the pan and these binder clips hold the parchment paper in nicely!

More Lemon Desserts:

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Lemon Icebox Cake

5 from 2 votes
This Lemon Icebox Cake recipe is easy to make, delicious, and perfect for really any occasion. With just a handful of ingredients and minimal prep work, this cake is a breeze to put together. But don't let its simplicity fool you--the combination of sweet lemon pudding with buttery shortbread cookies is nothing short of amazing!
Print Recipe

Lemon Icebox Cake

5 from 2 votes
This Lemon Icebox Cake recipe is easy to make, delicious, and perfect for really any occasion. With just a handful of ingredients and minimal prep work, this cake is a breeze to put together. But don't let its simplicity fool you--the combination of sweet lemon pudding with buttery shortbread cookies is nothing short of amazing!
Course Dessert, treat
Cuisine American, Vegetarian
Keyword Lemon Icebox Cake
Prep Time 20 minutes
Chilling Time 1 day
Total Time 1 day 20 minutes
Servings 16 servings
Chelsea Lords
Calories 187kcal
Cost $7.98

Equipment

  • 8x8-inch pan and parchment paper

Ingredients

  • 2 pkgs. (10 oz. EACH) Loorna Doone cookies (Note 1)
  • 2 pkgs. (3.4 oz. EACH) Instant lemon pudding (Note 2)
  • cups milk (we use whole milk)
  • 1 container (8 oz.) frozen whipped topping (like Cool Whip), thawed, separated (Note 3)
  • Optional topping: grated lemon zest

Instructions

  • PREP: Line an 8x8-inch pan with parchment paper, leaving an overhang for easy removal. Set aside for now. Remove 1 heaping cup of whipped topping and set it aside.
  • PUDDING: In a large bowl, combine both pudding mixes and milk and briskly whisk together for about 1 minute or until smooth. Take the remaining whipped topping and gently fold it into the pudding mixture until completely incorporated.
  • LAYER THE CAKE: Place cookies in the prepared pan, breaking them apart as needed to create an even layer. Top with half of the pudding mixture and use the back of a large spoon to gently spread into an even layer. Top with more cookies. Add the rest of the pudding, again spreading it into an even layer. Add the last layer of cookies. Finally, spread the reserved whipped topping in an even layer. Cover the cake and refrigerate for 24 hours. (This cake takes a little longer than most icebox cakes for the cookies to soften because they're so thick!)
  • SERVE: When ready to serve, cut the cake into squares (see Note 4) and, if desired, use a microplane to grate a bit of lemon zest on top. Alternatively, crumble any leftover cookies on top. Enjoy slices cold, straight out of the fridge.
  • STORAGE: We recommend eating the cake on days 2 or 3. It can become watery after that. To store the cake, serve it directly from the fridge. Any leftovers should be returned to the fridge promptly. We do not recommend freezing.

Recipe Notes

Note 1: Loorna Doone Shortbread Cookies: These cookies are used as the base of the cake and provide a sweet, buttery flavor. They soften when layered with the pudding mixture, turning to become a cake-like consistency. While we highly recommend using two boxes of them for this recipe, graham crackers or vanilla wafers can be used as a substitute.
Note 2: Instant lemon pudding: Use two boxes of regular instant pudding mix (not sugar-free, not low-fat) of instant pudding mix–not the cook-and-serve type. Also, keep an eye out for the pudding box size. Get the small 3.4-ounce boxes. When using the pudding mix, follow my specific recipe directions — don’t prepare it according to package instructions. 
Note 3: Frozen whipped topping: Cool Whip is a common brand of frozen whipped topping that we use in our test kitchen. Be sure to use regular, not sugar-free/reduced-fat which can become watery. Or make your own; our recipe for homemade whipped cream is in the blog post!
Note 4: Make clean cuts: When cutting the cake, use a sharp chef’s knife and make decisive cuts. Run the knife under warm water, dry it on a kitchen towel, and repeat for each cut.

Nutrition Facts

Serving: 1serving | Calories: 187kcal | Carbohydrates: 27g | Protein: 3g | Fat: 8g | Saturated Fat: 4g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 2g | Cholesterol: 4mg | Sodium: 147mg | Potassium: 82mg | Fiber: 0.2g | Sugar: 9g | Vitamin A: 81IU | Calcium: 55mg | Iron: 1mg

We do our best to provide accurate nutritional analysis for our recipes. Our nutritional data is calculated using a third-party algorithm and may vary, based on individual cooking styles, measurements, and ingredient sizes. Please use this information for comparison purposes and consult a health professional for nutrition guidance as needed.

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