Passion Fruit Sheet Cake with Passion Fruit Buttercream

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Passion fruit is one of those fruits that are not available in abundance everywhere. You will find them in some grocery stores but not all of them. I usually get mine from Sprouts when I want to make something with them. They are not cheap though, each passion fruit is for like $3. 

Passion Fruit Sheet Cake

I actually took the seeds from a passion fruit and planted them in a pot, outside in my garden. I see saplings now, but they are slow in growth. They are a tropical fruit and require a lot of water and sunshine.

I have a friend, who lives close by. She has the most beautiful passion fruit vine in her backyard. They have actually built a wire grid that is about 12 feet long, and it sits on 2 poles holding it around 6 feet high. The vine grows over it, and has the passion fruit hanging through the wire grid! So beautiful! When they turn ripe, my friend will share them with me, because she knows my love for passion fruit!


Nick over at Rincon Tropics, , has been very generous in sending me passion fruits from his farm. He is a sixth generation farmer, and he grows passion fruits, avocados, eureka lemons and dragon fruit. I have tasted the passion fruits and avocados. The avocados are the best that I have ever eaten ever in my life! And so are the passion fruits! They are very juicy, tart, and DO make the best desserts in town! 

Passion Fruit Sheet Cake

Passion Fruit Sheet Cake

I really wanted to make a passion fruit sheet cake, something that my family would enjoy. They love passion fruit as well, just like me. This time I did not add any spices, just a plain simple cake, with fresh passion fruit juice, a passion fruit buttercream, and I topped it off with a macadamia nut brittle, and some decorative touches to give the cake an elegant finish.



  • Set aside a medium bowl with a medium sized sieve. 
  • Cut the passion fruit in half.
  • Using a spoon, remove all the pulp into the sieve
  • Repeat for all the passion fruits.
  • Using a rubber spatula, press against the sieve, holding it with one hand, and squeeze out as much juice as possible.
  • Make sure to clean the bottom of the sieve with the spatula to extract any possible juice.
  • Store the passion fruit juice in an airtight container, or glass jar, or a deli container, and in the freezer, upto 2 months.



You can also store just the passion fruit after extraction, in an airtight container or a deli container. Store it in the freezer for upto 2 months. 

Defrost it in the fridge, strain and extract the passion fruit juice per the above method and use it in all the different ways possible!

Passion Fruit Sheet Cake



  • The cake itself has creme fraiche, which makes the cake really moist and very soft. The passion fruit flavor comes from the fresh passion fruit juice that is put into the batter. 
  • You have to make sure that the cake is not overbaked. At the 30 minute mark, test the cake by putting the toothpick in the center of the cake, to test for doneness. If the toothpick comes out clean then your cake is done and just right. If there is batter stuck to the toothpick, the cake needs a few more minutes.
  • Test for doneness again after 5 more minutes. The edges of the cake will be slightly brown and the top will be golden brown in color.
  • Another way to test is to hear your cake crackling. If the cake is crackling, you know that it is done. You almost have to ‘hear’ your cake. It sounds weird but it is true! 
  • I also brush the cake with passion fruit syrup to keep the cake moist and tasting as passion fruity as possible!

Passion Fruit Sheet Cake


The buttercream is made out of passion fruit juice again. It is really quite delicious and tastes of the tropics! This cake took me right back to Hawaii, on the beaches, with my feet in the sand, listening to the waves crashing against the shore. Sigh, if only! 


I love decorating cakes. It is one thing that I truly enjoy! So I decided to pipe a decorative border with different piping tips around the cake. I also put some sprinkles for good measure. And made a macadamia nut brittle, to go along with the cake. The brittle is SO good by itself and great to munch on! 

Passion Fruit Sheet Cake

This cake will NOT last long in your home! It is a perfect party cake, since it is pretty big, baked in a 9*13 inch sheet pan. I can totally see this cake at a party and ofcourse there would be NO leftovers. Moist, tropical, tasty, tangy, sweet and delicious! What more do you require in a good cake?!


Passion Fruit Sheet Cake

Make this cake, and do not forget to tag #thejamlab on Instagram and/or leave a sweet comment on this blog post! 🙂


Hope you are all doing well! I will start posting some Fall content soon! Until then!




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