Melt the coconut oil in the microwave (at 650W, stirring every 20 to 30 seconds) and set aside.
Grind the oats in a small blender or food processor.
In a large bowl, combine the ground oats, the cornstarch and the baking powder.
Make a well in the center of the dry ingredients and add the egg, the applesauce, the maple syrup, the apple cider vinegar and the melted coconut oil. Combine until a homogeneous batter forms. Finally, add the chocolate chips.
Grease the waffle iron* with a little coconut oil and preheat it.
As soon as the waffle iron is ready, pour about 1 large tablespoon of batter in each square and bake for 3 to 4 minutes. Remember to grease after baking each waffle if necessary.
Using a fork, carefully remove the waffles. Serve with toppings of your choice (maple syrup, fresh fruit, soy yogurt, etc.)