Preheat oven to 350° and line 1-2 mini muffin tins with mini parchment liners. It will make 24 muffins so however many pans that takes. Set aside.
In a large bowl, combine almond flour, coconut flour, coconut sugar, salt, and baking soda. Mix well.
Add in the ghee, maple syrup, eggs, and vanilla and mix until fully combined and no dry spots remain. Fold in the blueberries and spoon evenly into the muffin tin.
Bake 15-17 minutes, until edges are lightly brown. Remove and let fully cool. Remove all the parchment liners before glazing.
Once the muffins are cool, make the glaze. In a glass measuring cup combine coconut butter, maple syrup and blueberries. If the coconut butter is a solid, microwave for 15-20 seconds to soften. Use an immersion blender to blend the mixture together. It may be thick. Alternatively, you can place ingredients in a small blender and mix. Stir in lemon juice until desired consistency.
Spoon glaze over each muffin, coating evenly. Let dry on a wire rack.
Keep in the fridge after 24 hours.