This vegan Key Lime Pie is delicious, gluten-free and refined sugar-free. It makes a perfect delightful dessert that is healthy, refreshing and easy to make.

I created this recipe very spontaneously because I just wanted to try out my new blender. But then I was so happy with the texture and taste of my Vegan Key Lime Pie, so I decided to share this recipe with you! Not only it is totally delicious, but it is also super easy to make and you need just a few simple ingredients.

Vegan Key Lime Pie with Healthy, Plant-based Ingredients
Key Lime Pie is traditionally made with eggs, butter, condensed milk and a cookie base. Unfortunately this is not very healthy. So I decided to make a healthy, plant-based version by using a mix of coconut milk, cornstarch, agar-agar and maple syrup to sweeten instead. (Cornstarch and agar-agar is neccessary here to thicken into a custard-like texture.)
I was so satisfied with the result because it has a creamy filling and features a crunchy “buttery” crust made of almonds and gluten-free oats.

Only 20-Minutes Baking Time!
Another great thing about this recipe is you do not have to bake the pie filling. So if you prepare the pie crust before, you do not need to heating your oven up. I mean, how amazing is that?!
As mentioned before this Vegan Key Lime Pie is just made with plant-based, wholesome and healthy ingredients. It has a creamy coconut lime filling with a crispy almond oat crust! You need NO TOFU and NO CASHEWS and only 20-MINUTES baking time.

What You‘ll Love about this Easy Vegan Key Lime Pie
This light Vegan Key Lime Pie is perfect in so many ways. The perfect healthy sweet treat for any occasion! It is:
- plant-based
- gluten-free
- refined sugar-free
- dairy-free
- egg-free
- easy to make
- refreshing
- totally delicious

Healthy Pie Crust
The crust is made out of gluten-free oats and almonds, that give a delicious nutty flavour. As added extra bonus almonds are also high in protein! If you do not want to use almonds, you can sub regular (gluten-free) flour of choice. To get the dough to stick together, I use a mix of coconut oil and agave syrup. Sticky syrup is absolutely perfect for binding and much healthier as refined sugar.
But now let’s start with the recipe.

You can also make this Vegan Key Lime Pie into Mini Tarts if you prefer!

Vegan Key Lime Pie (gluten-free)
Author:You do not have a fitting cake pan at hand right now? Try my Cake Pan Conversion Calculator!
Ingredients
Pie Crust:
- 1 1/4 cup gluten-free oats (115 g)
- 3/4 cup ground almonds (or almond meal or sub regular (gluten-free) flour) (75 g)
- 1/4 cup coconut oil (60 ml) melted
- 3 tbsp agave syrup or coconut syrup
- pinch of salt
Key Lime Filling:
- 1 can coconut milk (400 ml) full-fat
- 1/3 cup fresh lime juice (80 ml)
- 2 tbsp cornstarch
- 1/2 tsp agar-agar (or sub 1 tbsp more cornstarch)
- 1/4 cup rice syrup (or sub maple or agave or regular sugar) (80 g)
- 1 tsp vanilla extract
- 1/2 tsp matcha powder (optional)
Instructions
Pie Crust:
- Preheat the oven to 180℃ (355℉). Grease a 8-inch tart tin (20 cm) with coconut oil.
- In a blender or food processor, add oats and almonds. Process until finely ground.
- Add coconut oil, agave syrup and a pinch of salt. Mix until just combined to form a ball. (If it is still too crumbly, add a bit more oil/ agave syrup).
- Press down the mixture into the button and sides of your greased tart tin with your fingers.
- Bake for 20 minutes, or until golden-brown. Let the tart cool completely afterwards.
Key Lime Filling:
- Heat up coconut milk in a saucepan.
- In a cup, add lime juice and cornstarch. Mix until dissolved.
- Next add it to the hot coconut milk along with agar-agar, rice syrup, vanilla (and matcha if desired). Stir the mixture constantly until it begins to cook and thicken. Keep stirring and cook for approx. 1 minute more.
- Then Remove from the heat and set aside. Allow to cool down until room temperature.
- Pour the key lime filling into your prepared tart.
- Let set in the fridge for at least 3 hours (or overnight) to firm up.
- Decorate your tart with lime or lemon slices and red currants or other fruits/ berries before serving, if you like.
- Enjoy!
Notes
- You can store this Pie in the fridge for up to 1 week. Please do not freeze it because it will alter the texture into spongy.
- You can vary the recipe by using any other fruit juice you like instead of lime juice.
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Hello! What is the size of your form in cm?
20 cm 🙂
Thanks so much!!! I made substituting oat milk ‘ sheep yogurt for coconut milk. I used sorghum flour instead of cornstarch. I don’t ear corn or coconut. Ugh. It taste delicious but is watery consistency. Any suggestions? I’m thinking maybe add more sorghum flour &. Sheep yogurt? Thanks! God bless! Merry Christmas!
Hi Stephanie,
I believe that sorghum flour is not a very good substitute for corn starch. I’d suggest to use potato starch instead.
Wish you a very merry Christmas as well! 🙂
Such a delicious and easy to make pie! Made this for my friend’s bbq and everyone loved it and asked for a recipe. I will surely make this again.
So glad you’re happy with this recipe!
Thank you so much for your feedback!
Much love,
Bianca 😊
I absolutely loved this pie! I was a bit scared it wouldn’t set because I was out of agar but it came out perfect! The taste was perfectly tangie, not to sweet and so easy to make.
Thank you Bianca!
So glad you enjoyed it! Thank you! 😊
Hi Bianca
I was wondering what we could substitute for corn starch as both my hubby and I are allergic. Would tapioca or potato starch work? Also, do you use Agar flakes or powder?
Hi Nancy, I use 100% pure agar powder. Please do not use flakes or you’ll need up to three times more than required to set the filling. You can substitute tapioca starch for the cornstarch. Hope you’ll enjoy it! 🙂
Can I use sunflour seeds or another but besides almonds??
**nut. 🤦🏿♀️
I haven’t tried it yet but let me know how it turned out if you give it a try 😉
Easy to make and super delicious!
Also my flatmates love it!
So glad that you liked it! Thank you so much!:)
Lots of love,
Bianca <3
So why did you only give it 3 stars?? 🙄
No idea…. but glad you give this recipe 5 stars! 🙂
Thank you so much! <3
This is for sure one of the best vegan blog, your work is so beautiful and inspring! It’s also a good idea to try one of your recipe. I’m going to do this one this week end ??
Hi Cyrine,
Thank you so much for your lovely comment! ❤️
I‘m so happy that you like my blog and my recipes. ?
Much love,
Bianca ❤️
Bianca, love your recipes ? This one looks delisious! ? Can I use homemade coconut milk instead of a can one? Thanks
Hi Lucy,
Thank you so much! ?
Of course you can use homemade coconut milk. But please make sure that it’s full-fat. Otherwise the texture won’t be so creamy and firm.
Lots of love,
Bianca ❤️
Made this one today! I did substitute some of the ingredients, but it was delicious! A perfect summery dessert that doesn’t make you feel overly full. Love it.
I halfend the recipe to fit it into two small pie forms of 10cm.
So glad this recipe turned out great! Thank you so much! ❤️
This is such a beautiful pie, Bianca! I wish I could try a big piece. We could totally make a big party with our vegan key lime pies today, how awesome would that be. ?
Lots of love, Ela ?
Hi Ela,
Thank you for your cute comment!❤️
A party sounds absolutely amazing. Hope you’ll have still some leftovers for me ?
Much love,
Bianca ❤️