In a blender beat all the passion fruit pulp with the three cups of water, if you use the fruit directly consider removing the seeds after turning it into juice in the appliance, for this make use of the strainer.
I was wondering what you needed the blender for until I got here. I guess I skipped the Passion Fruit while reading the ingredients.
This is a good recipe for those who have this allergy. I am sure they will find this recipe helpful. Thanks for sharing.
RE: [Eng/Esp] Simple passion fruit cake free from gluten, sugar and milk / Torta simple de maracuyá (Fruta de la Pasión) libre de gluten, azúcar y leche