Preheat the oven to 350F & line your cupcake pans
Combine all the wet ingredient together in one large mixing bowl
Then sift all the dry ingredients together in a larger bowl *including the dry blend egg replacer- I do not reconstitute it
Add the wet ingredients to the dry & whisk smooth then add the flaked coconut
Portion the batter into the cupcake liner filling 3/4 full then bake for approximately 25 minutes or when they are springy to the touch when you gently press the centers
Prepare the American Buttercream recipe according to the instructions on that post & add the coconut extract at the last stage of mixing
Lightly toast the coconut flakes in a preheated 250F oven for 10 minutes or to your desired color
Next prepare the lemon custard by combining the sugar & the cornstarch together in a heavy bottom medium sauce pot, add the lemon juice, lemon zest, water & plant milk and a pinch of turmeric for color if desired
Cook over medium high heat whisking constantly to avoid scorching the bottom
Once it comes to a full boil let boil for 10 seconds then remove from heat & cool slightly
Coring cupcakes is easiest when they are cold or even semi frozen to reduce the amount of crumbs & breakage, core the cupcakes & fill them with lemon custard then refrigerate immediate to set
Ice with buttercream then coat them in toasted coconut