Preheat oven to 350 F and prepare 12 pc muffin pan with muffin liners for later.
In a medium bowl combine all the liquid ingredients (applesauce, maple syrup, coconut oil and vanilla) and set aside.
In a separate large bowl place all your dry ingredients (everything except diced apple) and mix well to combine.
Make a ‘well’ in the centre of the bowl of dry ingredients and pour in your wet ingredients. Using a spatula fold the wet and dry ingredients together until well combined.
Add your diced apples and gently fold to mix them in.
Using a large spoon or ice cream scoop, evenly distribute muffin mix into prepared muffin tins. For an optional crunchy top sprinkle brown sugar on to each muffin top before placing in the oven.
Place in a preheated oven and bake for 20 minutes, or until a toothpick can be inserted in the centre of the muffin and come out clean. When ready remove from the oven, lift out of the pan and place on the cooling rack for 10 minutes. Once muffins are cooled, enjoy!