Sift the flour, baking powder, baking soda, and salt into a mixing bowl. Whisk to combine.
Then pour the maple syrup, milk, vanilla extract, and lemon juice and gently whisk all the ingredients.
Heat a skillet or a frying pan over low heat and grease the pan with coconut oil.
Once hot, pour a ladle of the batter into the pan and sprinkle with blueberries on top. Add as many blueberries as you want.
Let it cook for about 1 or 2 minutes. When bubbles start to appear all over the top, flip it very gently and let it cook for more 2 minutes, then plate. Repeat this process until you have used all the batter.
Meanwhile, make the blueberry sauce. Add the frozen blueberries, coconut sugar, and water to a small saucepan.
Heat the saucepan over medium heat and bring to a boil while stirring frequently. Simmer for about 5 minutes or until the sauce has thickened to your desired consistency. Serve your pancakes immediately topped with blueberry sauce or your favorite toppings.