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Summery Grapefruit Tart

This quick and easy grapefruit tart is light, bright and so refreshing. Topped with toasted coconut & chopped almonds – it’s a flavour combination that’s hard to beat.

Grapefruit Tart

I know grapefruits are at their best in the winter.

But they’re always available where we shop.

And Red is a little obsessed with them so we always have them around.

So I decided it’s time to get in on the action and bake something grapefruit-y.

Grapefruit tart

Grapefruit Tart

Instead of a cake, I decided to make a grapefruit tart. It’s summer after all and I wanted something light and refreshing. And refreshing, this is.

Creamy, not overly sweet, with a hint of that grapefruit tartness – a slice of this on a hot summer day will immediately cool you down (or on a cold winter day – cheer you up!)

Don’t skip the toasted coconut and almonds – coconut with grapefruit is the flavour combination food dreams are made of.

Grapefruits are not acidic enough

Grapefruit Tart

I love key lime pie. So I initially thought I could just switch the citrus and use my eggless key lime pie recipe.

But after much research I found that the acidity of grapefruit is lower than key limes (or lemons) so the pie will not set if they are subbed.


Grapefruit Tart

There were lots of ideas out there about how to address this including putting crushed vitamin C into the recipe.

I was not comfortable with that so I settled on cornstarch. The original recipe asked for 3 tablespoons, which I thought was a lot but I promise you will not taste it in the tart.

Slice of the tropics

Grapefruit Tart

The only thing you will taste is deliciousness.

Served cold and topped with toasted coconuts and chopped almonds, a slice of this tart is pure bliss.

It’s luxuriously creamy, it has the perfect balance of sweet and tangy, the coconut lending crunch and a tropical flair.

I’m not a big grapefruit fan but I am a huge fan of this tart. If you manage to get a hold of grapefruits this season, grab a few and treat yourself to a unique tart with flavours that are hard to beat.

Grapefruit Tart

Summery Grapefruit Tart

Author: Jolina
This grapefruit tart is light, bright & so refreshing. Topped with toasted coconut & chopped almonds – it’s a flavour combination that’s hard to beat.
5 from 2 votes
Prep Time 15 mins
Cook Time 15 mins
Chill Time 6 hrs
Total Time 6 hrs 30 mins
Course Dessert
Cuisine North American
Servings 12 servings
Calories 203 kcal


  • 1 ½ cups graham cracker crumbs
  • cup salted butter melted
  • 1 pcs egg white from a large egg lightly beaten
  • ½ cup condensed milk
  • 3 tbsp cornstarch
  • 1 ½ cups fresh ruby red grapefruit juice from about 2-3 grapefruits
  • 3 pcs egg yolks from large eggs lightly beaten
  • 6 tbsp unsalted butter room temperature
  • pinch salt
  • ¼ cup shredded coconuts toasted
  • ¼ cup chopped almonds toasted


  • Preheat oven to 400F.
  • Mix 1 ½ cups graham cracker crumbs and ⅓ cup butter until the crumbs are evenly moist.
  • Press on the bottom and sides of a 9-inch tart pan with a removable bottom.
  • Lightly brush with egg white.
  • Bake for 5-7 minutes or until light, golden brown. Set aside and turn the oven off.
  • In a medium saucepan stir ½ cup condensed milk, 3 tablespoons cornstarch and 1 ½ cups grapefruit juice until well combined. Cook on medium heat until thick and bubbly.
  • Lower the heat and add the 3 egg yolks. Stir constantly to avoid scrambling the eggs. Bring to a light boil. Cook and stir for another 2 minutes.
  • Remove from heat and add the 6 tablespoons of butter until melted. Add a pinch of salt and give the mixture one final stir.
  • Strain the mixture through a fine mesh sieve into the prepared crust.
  • Cover loosely with aluminum foil and chill for at least 6 hours or until set.
  • Top with toasted coconut and almonds and serve cold.


Calories: 203kcalCarbohydrates: 20gProtein: 2gFat: 13gSaturated Fat: 8gPolyunsaturated Fat: 1gMonounsaturated Fat: 4gTrans Fat: 1gCholesterol: 36mgSodium: 132mgPotassium: 117mgFiber: 1gSugar: 13gVitamin A: 372IUVitamin C: 8mgCalcium: 50mgIron: 1mg

Nutritional information are estimates only.

Keyword Easy, Spring, Summer
Tried this recipe?Tag @iamtheunlikelybaker I’d love to see your creations!

(Recipe adapted from BHG).

Happy baking!

Did you make this grapefruit tart? Tell me about it in the comments section below. I’d love to hear all about it.

Rate the Recipe


Saturday 14th of October 2017

Instead of using vitamin c I would have gone with citric acid, I guess it would just take a pinch to get enough acidity to settle the milk. But then I would omit the aluminum foil because it reacts with the acid. Anyway the tart looks amazing and the roasted coconut adds a nice crunch to it.


Sunday 15th of October 2017

Hi Ricky! Frankly I'm wary of putting those ingredients on the tart...I guess because they're not your usual baking ingredients? Though that's such a great insight on citric acid and aluminum foil. Perhaps I would try that next time :)

Kyla Matton Osborne

Tuesday 12th of July 2016

I am not much of a fan of key lime pie, but grapefruit? Yes, please! I wonder, would bottled juice work instead of fresh-squeezed?


Tuesday 12th of July 2016

Hi Kyla! I think bottled juice would work. As with KLP, some people prefer to use bottled instead of fresh juice. Just watch the sweetness or the acidity (sourness). Since they are concentrated their flavour will be stronger than fresh (I do recommend using fresh juice though :)


Monday 11th of July 2016

Gorgeous tart and must be delicious! Absolutely great recipe also I love that it's less acid, perfect for summer! - Love, Anna


Tuesday 12th of July 2016

Thanks Anna! It is a really refreshing tart, awesome for summer :)


Sunday 3rd of July 2016

Thank you for this recipe! I just made it last night and had to let you know that it turned out fantastic! I didn't have any graham crackers so I made a shortbread crust instead. Also, the toasted coconut on top is an absolute must! Great dessert :)


Tuesday 5th of July 2016

Hi Laura! I'm so happy to hear that! So glad you liked it :) Shortbread crust sounds delightful. And isn't toasted coconut just icing on the tart, so to speak? :) I love it, it awesome. Have a wonderful day!


Thursday 30th of June 2016

What a great idea. I have never tried grapefruit tart before. Amazing! I am so making this.


Saturday 2nd of July 2016

Hi Igor! Thanks very much! It is definitely a unique combination of flavours. Hope you like it! Would love to hear how it goes :)