Turn the oven on to 400°F.
Put the unmelted butter in an 8x8 baking dish, preferably glass. Put the baking dish in the oven to mel the butter while the oven preheats.
While the butter is melting, whisk the eggs in a large bowl.
Whisk in the coconut milk, vanilla, and cinnamon until combined.
Add in the almond flour and whisk until smooth. You may have a few lumps from the coconut milk solids, it's not a big deal if you don't get them all.
Remove the baking pan from the oven (make sure you remove it before it browns or burns), swirl it around to coat the bottom and sides of the dish, and pour in the batter.
Sprinkle some sea salt on top of the batter and put in the oven.
Bake for 25-30 minutes. Remove from oven when a toothpick inserted in the center comes out clean.
Slice and serve warm with pure maple syrup and sliced strawberries.