Place milk, eggs, banana, almond flour, flax, cinnamon, baking powder and salt in a blender container and blend until smooth. If too thick, add additional milk.
Heat a skillet over medium heat. Add butter to skillet and melt. Pour 1/3 cup batter for each pancake into pan and cook for 2 minutes per side, or until golden.
To make the topping, place yogurt and blueberries in a blender and blend together.