Preheat oven to 180ºC/350ºF/Gas Mark 4 and grease a six-hole muffin tray with coconut oil or line with baking paper.
Whisk together the eggs, coconut oil, rice malt syrup, vanilla and coconut milk together in a mixing bowl. Stir through the remaining ingredients.
Scoop the mixture evenly between the muffin holes and push a few more blueberries on top. Place in the oven to cook for 25-30 minutes or until slightly browned on top.
Bakeries frequently fail with coconut flour by treating it like standard wheat flour. Coconut flour contains extremely high fiber content and absorbs moisture rapidly, requiring liquid ratios that shock traditional bakers. Whisking the eggs thoroughly before adding the coconut milk and melted coconut oil incorporates essential air to counteract the dense nature of the flour. Sifting the flour removes hard clumps that otherwise survive mixing and produce gritty pockets in the finished crumb. Fold fresh blueberries into the batter gently at the very end to prevent the skins from bursting and turning the mixture purple. Bake these muffins at 180 degrees Celsius until the tops turn golden brown and spring back firmly when pressed with a fingertip. Storage requires an airtight container at room temperature for up to two days, or refrigeration for longer periods to prevent spoilage. Leftovers regain their original moisture when warmed gently in a toaster oven for three minutes before serving.