Add all dry ingredients to a large mixing bowl. Whisk until well combined. Add applesauce and soda water and mix thoroughly. Spray donut pan with a layer of cooking spray. Add about ⅓ cup of batter to each cavity.
Bake for 20-25 minutes until donuts are solid to the touch.
Allow to cool for about 5 minutes before removing from pan and placing on a cooling rack for at least another 15 minutes.
Melt chocolate chips and coconut oil by placing into glass or ceramic bowl and microwaving for 30 seconds. Stir together until smooth. Heat in additional 10 second intervals if necessary, stirring continuously to chive a smooth sauce texture.
Spread an even layer of chocolate glaze onto the base of the donuts. Finish by sprinkling with an even layer of chocolate strawberry pieces. Allow to set for 20-30 minutes before eating. Can be stored in an air-tight container in the refrigerator for up to a week.