Crustless Gluten-Free Coconut Pie

large (or extra large) eggs

granulated sugar

plus 1 tbsp gluten-free all-purpose flour mix (I use my own 2-ingredient flour mix; see notes for other substitutions)

milk (dairy-free milk works fine; I like full-fat coconut milk)

butter, melted (or 1/3 cup coconut oil, liquefied)

vanilla extract

apple cider vinegar

coconut flakes/shredded coconut