Key Lime Pie Tiramisu

The sun is out and the weather is warm. Nothing says summer like the tart and bright burst of citrus. Key Lime Pie Tiramisu is a creamy, tangy, and tropical twist on the beloved Italian classic.

Key Lime Pie Tiramisu

While there is nothing wrong with the classic Italian version of tiramisu, this no-bake dessert is a great canvas for seasonal flavors. Whether it’s Spiced Pumpkin Tiramisu or this tropical version, there’s something magical about its tender and silky texture. As soon as you sink your fork into this key lime kissed rendition, it will be love at first bite.

Why You’ll Love This Recipe

Key Lime Tiramisu
  • Easy Process – This dessert is completely no-bake. Unlike some tiramisu recipes that have you creating a double boiler for a zabaglione, all you need is a bowl and mixer. The hardest part of making this is waiting to dive in while it sets up in the refrigerator.
  • Minimal Ingredients – You don’t need a lot of fancy ingredients to create this Florida inspired confection. While it has the classic components of tiramisu such as mascarpone and lady fingers it also utilizes traditional key lime pie ingredients like sweetened condensed milk.
  • Make Ahead – Not only do you need to let this refrigerate for at least four hours, it actually gets better the longer it sits. All of the flavors come together and the lady fingers become tender.
  • Balance of Flavors – This tiramisu recipe is a little tart and a little sweet. It has that perfect balance that everyone will love.

Ingredients

Bright, sunny key limes, rich, buttery mascarpone, and irresistibly decadent sweetened condensed milk make Key Lime Pie Tiramisu an instant classic. With just a few simple ingredients that you can find at any store, this layered dessert is easy to shop for and even easier to make.

Key Lime Pie Tiramisu
  • Mascarpone Cheese This is an Italian double or triple cream cheese that is silky smooth, buttery, and a little naturally sweet from the cream. It gives this dessert its richness and the cream layer its incredible texture.
  • Sweetened Condensed Milk – A classic component of key lime pie, this gives the key lime cream layer its sweetness.
  • Heavy Cream – Makes the cream layer a little light, fluffy, and completely decadent.
  • Lime Zest – Adds a strong tangy citrus flavor to whipped cream.
  • Ladyfinger Cookies – These traditionally Italian biscuits are light, dry, and perfect for a quick dip in the lime mixture. They soften as this dessert sets up but give it texture and stability.
  • Lime Juice – You can use fresh squeezed lime juice or storebought key lime juice. Bright, tangy, and a true taste of sunshine, this is used in both the cream layer and also the dip for the lady fingers.
  • Sugar – Balances out the tang in the dip for the cookies.

How to Make Key Lime Tiramisu

Celebrate the summer with this mashup of two beloved confections. Whether you’re looking for something to serve alongside your Sheet Pan Flank Steak Fajita dinner or take to your next cookout, this is it. With the best flavors and textures of both key lime pie and tiramisu coming together without any complicated steps, this sweet treat will be on repeat all summer long.

Time needed: 4 hours and 20 minutes

Lime dipped lady fingers, buttery mascarpone, irresistible sweetened condensed milk, and sunny citrus zest bring all of the flavor and texture to this easy layered dessert.

  1. Mise en Place

    This dessert fits an 8×8 baking dish. Zest your lemons and limes. Squeeze your lime juice.

  2. Stiff Peaks

    Add the mascarpone, sweetened condensed milk, and half a cup of lime juice to a bowl and whip until smooth and creamy. Slowly add in the heavy cream and continue to whip until stiff peaks form. Gently fold in the lime zest.Tiramisu

  3. Dipper

    In a separate bowl or shallow dish add the remaining lime juice and sugar and whisk until the sugar is dissolved.

  4. First Layer

    Quickly dip a lady finger into the lime mixture, and then place it in the bottom of the pan. Proceed with more lady fingers until the bottom is lined.

  5. Second Layer

    Spread half of the mascarpone mixture over the lady fingers and smooth it out. Tiramisu

  6. Third Layer

    Add another layer of lady fingers. Tiramisu

  7. Final Layer

    Spread the remaining cream mixture over the top of the lady fingers.

  8. Chill Down

    Let the key lime pie tiramisu refrigerate for 4-6 hours. You can do this the day before.

  9. Finishing Touch

    Garnish the top of your tiramisu with fresh lime zest and crushed lady fingers.

Substitutions

If you don’t have access to key limes, you can use Persian limes for this recipe. In addition, you can also use bottled key lime juice. It is usually located in the same aisle where the canned fruit fillings for pie is, and also the juice aisle. It makes a great addition to cocktails as well.

Storage

Key Lime Pie Tiramisu

This is a great dessert to make ahead of time and enjoy for several days. Because of the heavy cream and mascarpone cheese you’ll want to keep it refrigerated when not being served. Keep it tightly covered with plastic wrap when not out and it will last for up to five days. The lady fingers will become softer, but still equally delicious.

Tools

  • Bowl/Hand Mixer – You can use a whisk for this but using a hand mixing makes it easier to achieve that thick, creamy, and smooth texture quickly.
  • 8×8 Baking Dish – Make sure that your dish has high sides. Keep in mind there will be two layers of lady fingers and two layers of the mascarpone mixture.

Top Tip for Key Lime Pie Tiramisu

Key Lime Pie Tiramisu

Tiramisu is as much about the texture as it is the flavors. You want your lady fingers to be softened, but not soggy. When it comes to dipping them into the lime juice mixture dip down quickly and up. You don’t want to leave them submerged for any extended period of time.

Key Lime Pie Tiramisu

Key Lime Pie Tiramisu

Key Lime Pie Tiramisu is a creamy, tangy, and tropical twist on the beloved Italian classic
Prep Time 20 minutes
Chilling Time 2 hours
Course Dessert
Servings 8

Equipment

  • 2 mixing bowls
  • 1 hand mixer
  • 1 8×8 baking dish

Ingredients
  

  • 8 oz mascarpone cheese
  • 1 can sweetened condensed milk
  • 2 1/2 cups heavy cream
  • 1 tbsp lime zest
  • 28-30 lady finger cookies
  • 1 1/2 cups freshly squeezed lime juice or store-bought key lime juice, divided
  • 2 tbsp sugar
  • lime zest and crushed lady fingers for topping

Instructions
 

  • This dessert fit an 8×8 baking dish.
  • Add the mascarpone cheese, sweetened condensed milk, and half a cup of lime juice to a bowl and mix until smooth and combined.
  • Slowly add in the heavy cream while mixing and mix until stiff peaks form. The cream mixture will hold its shape.
  • Gently fold in the lime zest.
  • In a separate bowl or shallow dish add the remaining cup of lime juice and sugar and whisk until the sugar is dissolved.
  • Quickly dip a lady finger into the lime mixture and place it into the baking dish. Repeat until the bottom is covered.
  • Spread half of the cream mixture over the top of the lady fingers.
  • Repeat with the remaining lady fingers and place on top of the cream mixture.
  • Spread the remaining cream mixture over the top.
  • Allow the tiramisu to refrigerate for at least 4-6 hours.
  • Garnish with lime zest and crushed lady fingers.
  • Bon appetite!
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