I used coconut milk, but another dairy-free milk or yogurt will work as well. And if you prefer, maple syrup works also.I haven't tried frozen berries yet, but I'm guessing they'll work. Also, I love lots of blueberries so I go up to 1 cup of berries. I save a handful to put on the top after I've placed the batter in the muffin liners. Also, keep in mind, the wetness and amount of the berries will affect the moisture in the muffin.For mixing the batter, I use a food processor, but if you don't have one you can use a bowl and spoon, mixer, or blender. You can use ghee or unsalted butter in place of oil.
Preheat your oven to 350°F (180°C, or gas mark 4).
Add liners to a baking pan.
Add the almond flour, coconut flour, salt and baking soda to a food processor and pulse a few times to blend. Or use a blender, mixer, or bowl and spoon.
Add the eggs, oil, honey, and milk, and pulse a few times. Rest the batter for a few minutes to let the coconut flour absorb the moisture.
Fold in the blueberries.
Add the batter to the baking pan and bake for 30 minutes, or until the tops begin to brown and a toothpick inserted in a muffin comes out clean.
Cool and serve. Store covered for a few days at room temperature, or for a few weeks in the refrigerator.