If you love the bright citrus flavor of key lime pie, then these easy key lime bars are about to become one of your favorite desserts.
They feature a buttery graham cracker crust topped with a creamy, tangy key lime filling that strikes the perfect balance between sweet and tart.

These bars are simple to make, slice beautifully for serving, and are perfect for summer gatherings, potlucks, family dinners, or holiday dessert trays. The refreshing lime flavor makes them feel light after a meal while still delivering that rich, indulgent texture everyone loves.
Why You'll Love These Key Lime Bars
- Bright citrus flavor with the perfect sweet-tart balance
- Simple ingredients you likely already have in your kitchen
- Easy to slice and serve for parties and gatherings
- A refreshing dessert for spring and summer

Ingredients
- 1 1/2 cups graham cracker crumbs
- 1/4 cup granulated sugar
- 5 TBSP unsalted butter, melted
- pinch of salt
- 1 – 14 oz. can sweetened condensed milk
- 4 large eggs
- 2/3 cup Key Lime juice (or lime juice)
- 2 tablespoons of lime zest
- 1 teaspoon baking powder
- 1/4 tsp. salt
- whipped topping
- Mint for the topping
These bars taste just like traditional key lime pie, but in an easy-to-serve form.

You can find key lime juice at your grocery store; however, if it's not available, regular lime juice is fine to use instead.

If key lime is not your jam, you can just sub out the key lime juice for lemon juice and then make my amazing Pioneer Woman Lemon Bars or my Ina Garten Lemon Bars.
Once you get them ready, bake them in a 9×9 baking dish. Anolon has a new heavy-duty aluminum one, and it has become my new favorite baking dish.

How to Serve Key Lime Bars
Once chilled, lift the bars out using the parchment paper and cut into squares.
You can serve them:
- Dust with powdered sugar
- Topped with whipped cream
- Garnished with fresh lime zest or lime slices
They’re delicious served cold and are especially refreshing on a warm day.
Tips for the Best Key Lime Bars
Use key lime juice if possible. It has a stronger, more aromatic citrus flavor than regular limes.
Don’t overbake the filling. The center should still have a slight jiggle when you remove it from the oven.
Chill completely before cutting. This helps the bars hold their shape and gives them the perfect texture.
Storage
Store key lime bars in an airtight container in the refrigerator for up to 4 days.
They can also be frozen for up to 2 months. Simply thaw overnight in the refrigerator before serving.

Perfect for Any Occasion
Key lime bars are one of those desserts that feel both simple and elegant. Whether you’re making them for a family gathering, summer barbecue, or just a weekend treat, their fresh citrus flavor and creamy texture make them a guaranteed hit.
More Spring Dessert Recipes …
We share recipes from #SpringSweetsWeek on Pinterest! Make sure you follow the board to see all the delicious recipes shared this week.
Key Lime Bars
Easy Key Lime Pie Bars are an easy-to-make spring dessert. Key lime juice has just the right amount of tart to balance out the sweetness!
Ingredients
- 1 1/2 cups graham cracker crumbs
- 1/4 cup granulated sugar
- 5 TBSP unsalted butter, melted
- pinch of salt
- 1 - 14 oz. can sweetened condensed milk
- 4 large eggs
- 2/3 cup Key Lime juice (or lime juice)
- 2 tablespoons of lime zest
- 1 teaspoon baking powder
- 1/4 tsp. salt
- whipped topping
- Mint for the topping
Instructions
- Preheat oven to 350 degrees F. Combine the crust ingredients (graham cracker crumbs, granulated sugar, melted butter, and a pinch of salt) and press firmly into the bottom of a 9x9" baking dish lightly coated with cooking spray.
- Bake the crust for 8 minutes and cool to room temperature.
- In a large bowl, combine all filling ingredients with an electric mixer. Pour over the cooled crust.
- Bake for 20 to 25 minutes or until the filling is set but not browned.
- Allow to cool to room temperature and refrigerate for at least 4 hours. Cut into squares and garnish with whipped topping, fresh mint, and grated lime zest.
Nutrition Information:
Yield:
14Serving Size:
1Amount Per Serving: Calories: 238Total Fat: 10gSaturated Fat: 5gTrans Fat: 0gUnsaturated Fat: 4gCholesterol: 77mgSodium: 197mgCarbohydrates: 33gFiber: 0gSugar: 27gProtein: 6g

Radha
Friday 31st of March 2023
These look stunning! I would love a couple of these bars.
Lisa
Monday 27th of March 2023
Key Lime bars sound so good right now!
Inger
Sunday 26th of March 2023
THis is such a good idea. Love the pie and the bars are so practical!
Christie
Saturday 25th of March 2023
I love key lime pie so I know I'd love these bars. They look delicious.
Sue
Thursday 23rd of March 2023
Key lime desserts are my favorite for warm weather months. Looking forward to trying these!