Are you craving a sweet and tangy treat? This Martha Stewart Key Lime Bars Recipe is perfect.
It is creamy, tart, and very easy to make. Everyone loves the buttery graham cracker crust.
The lime filling is smooth and refreshing. You only need a few simple ingredients. This Martha Stewart Key Lime Bars Recipe brings the sunshine inside.
It is a great dessert for any party. Kids and adults will ask for seconds. Learn how to make this Martha Stewart Key Lime Bars Recipe today.
Your kitchen will smell like fresh citrus and butter. Let’s bake something delicious and bright right now!
When I first introduced to Martha Stewart Key Lime Bars
I first tried these bars at a summer picnic. My friend brought a big tray of them. They looked so simple but tasted amazing.
The tart lime flavor woke up my taste buds. I asked her for the recipe immediately.
She said it was a Martha Stewart classic. I went home and made them that night. They were a huge hit with my family.
Now, I make them for every backyard BBQ. They are much easier than a whole pie. You can eat them with your hands too.
These bars are truly a crowd-pleasing dessert.

Equipment List
- 9-inch square baking pan.
- Parchment paper for easy lifting.
- Large mixing bowl.
- Medium mixing bowl.
- Electric hand mixer or whisk.
- Rubber spatula.
- Measuring cups and spoons.
- Citrus juicer.
- Zester or small grater.
- Wire cooling rack.
Ingredients You Need for Martha Stewart Key Lime Bars
Here are the Ingredients for Martha Stewart Key Lime Bars:
- 1.5 cups graham cracker crumbs.
- 6 tablespoons melted unsalted butter.
- 1/4 cup granulated sugar.
- 2 large egg yolks.
- 1 can (14 oz) sweetened condensed milk.
- 1/2 cup fresh Key lime juice.
- 2 teaspoons grated Key lime zest.
- A pinch of fine salt.
- Whipped cream for the topping (optional).
Step-by-Step Guide
1. Prep the Oven and Pan
Preheat your oven to 350°F. Line your pan with parchment paper. Leave some paper hanging over the edges. This helps you lift the bars out later.
2. Make the Graham Cracker Crust
Mix crumbs, sugar, and melted butter. Use a fork to blend them well. Press the mix into the pan bottom. Use a flat glass to press firmly.
3. Bake the Crust
Put the pan in the oven. Bake for about 10 minutes. It should look lightly golden brown. Let it cool for a few minutes.
4. Whisk the Egg Yolks
Put egg yolks in a large bowl. Use a mixer to beat them. They should look thick and pale yellow. This takes about two minutes of mixing.
5. Add the Sweetened Milk
Pour in the sweetened condensed milk. Whisk it gently into the yolks. Make sure the mixture is very smooth.
6. Add Lime Juice and Zest
Slowly pour in the Key lime juice. Add the fresh lime zest and salt. Whisk until the filling starts to thicken. The acid reacts with the milk.
7. Pour and Bake
Pour the filling over the warm crust. Use a spatula to smooth the top. Bake for another 15 to 20 minutes. The center should be set but wiggly.
8. Cool and Chill
Let the pan cool on a rack. Then, put it in the fridge. Chill for at least two hours. Overnight is even better for the flavor.
9. Slice and Serve
Lift the bars using the parchment paper. Cut them into 12 or 16 squares. Top with whipped cream and extra zest.
Tips to Make the Best Martha Stewart Key Lime Bars
- Always use fresh Key lime juice for flavor.
- Bottled juice often tastes too bitter or metallic.
- If you cannot find Key limes, use Persians.
- Zest the limes before you juice them.
- It is much easier to do it first.
- Make sure your crust is pressed down tight.
- This prevents the bars from crumbling apart.
- Do not overbake the creamy lime filling.
- It should stay soft and very silky.
- Chill the bars fully before you try cutting.
- A cold knife makes very clean, pretty slices.
- Wipe the knife after every single cut.
- This keeps the edges looking professional and neat.
FAQs about Martha Stewart Key Lime Bars
Can I use regular limes instead of Key limes?
Yes, regular Persian limes work very well. They are less tart but still delicious.
How do I store these lime bars?
Keep them in the fridge in a container. They stay fresh for up to five days.
Can I freeze these dessert bars?
Yes, you can freeze them for one month. Thaw them in the fridge before serving.
Why did my filling not set properly?
You might need to bake them longer. Also, check your egg yolk size.
How to make Martha Stewart Key Lime Bars
look fancy? Add a dollop of fresh whipped cream. Place a thin lime slice on top.
Final Thoughts
Making this Martha Stewart Key Lime Bars Recipe is a joy. It is a simple way to impress friends.
The balance of sweet and sour is perfect. You do not need fancy skills to succeed. Just follow the steps and use fresh limes.
These bars are great for summer parties. They are also a bright treat in winter. Your family will love the creamy texture.
Every bite feels like a tropical vacation. Thank you for reading my baking guide today.
I hope you enjoy every single zesty crumb. Happy baking to all my kitchen friends!
Would you like me to create a shopping list for these ingredients?

Martha Stewart Key Lime Bars Recipe
Ingredients
- 1.5 cups graham cracker crumbs.
- 6 tablespoons melted unsalted butter.
- 1/4 cup granulated sugar.
- 2 large egg yolks.
- 1 can 14 oz sweetened condensed milk.
- 1/2 cup fresh Key lime juice.
- 2 teaspoons grated Key lime zest.
- A pinch of fine salt.
- Whipped cream for the topping optional.
Instructions
Prep the Oven and Pan
- Preheat your oven to 350°F. Line your pan with parchment paper. Leave some paper hanging over the edges. This helps you lift the bars out later.
Make the Graham Cracker Crust
- Mix crumbs, sugar, and melted butter. Use a fork to blend them well. Press the mix into the pan bottom. Use a flat glass to press firmly.
Bake the Crust
- Put the pan in the oven. Bake for about 10 minutes. It should look lightly golden brown. Let it cool for a few minutes.
Whisk the Egg Yolks
- Put egg yolks in a large bowl. Use a mixer to beat them. They should look thick and pale yellow. This takes about two minutes of mixing.
Add the Sweetened Milk
- Pour in the sweetened condensed milk. Whisk it gently into the yolks. Make sure the mixture is very smooth.
Add Lime Juice and Zest
- Slowly pour in the Key lime juice. Add the fresh lime zest and salt. Whisk until the filling starts to thicken. The acid reacts with the milk.
Pour and Bake
- Pour the filling over the warm crust. Use a spatula to smooth the top. Bake for another 15 to 20 minutes. The center should be set but wiggly.
Cool and Chill
- Let the pan cool on a rack. Then, put it in the fridge. Chill for at least two hours. Overnight is even better for the flavor.
Slice and Serve
- Lift the bars using the parchment paper. Cut them into 12 or 16 squares. Top with whipped cream and extra zest.
Notes
- Always use fresh Key lime juice for flavor.
- Bottled juice often tastes too bitter or metallic.
- If you cannot find Key limes, use Persians.
- Zest the limes before you juice them.
- It is much easier to do it first.
- Make sure your crust is pressed down tight.
- This prevents the bars from crumbling apart.
- Do not overbake the creamy lime filling.
- It should stay soft and very silky.
- Chill the bars fully before you try cutting.
- A cold knife makes very clean, pretty slices.
- Wipe the knife after every single cut.
- This keeps the edges looking professional and neat.













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