Preheat oven to 425 degrees F. Get your cast iron skillet out.
Add flour, eggs, and coconut milk to a blender or food processor and give the mixture a whirl.
Add sugar, vanilla, pinch salt and whirl again briefly.
If you have time, let the batter rest for about 20-25 minutes.
When the oven is hot, put the 2 tbsp of butter in your skillet and put it in the oven until the butter foams and the skillet is nice and hot, about 10-15 minutes.
Remove from oven, and swirl the butter around the skillet so it coats the sides just a bit.
Pour the batter into the skillet, scraping the sides of the food processor or blender so you get It all.
Let it bake for 15-20 minutes. Rotate the skillet halfway through. It's finished when it's golden brown on the sides and puffed up.
Remove from the oven. You can serve it in the skillet, or remove and put on a platter. Dust with powdered sugar and top with berries, chocolate chips, and/or shredded coconut and coconut whipped cream. Enjoy!