Preheat oven to 180°C (350°F).
In a medium mixing bowl, add the vegetable oil, milk and apple sauce, and vanilla essence. Mix until combined.
In another mixing bowl, add the chocolate chips, granulated sugar, light brown sugar, vanilla extract, salt, baking powder, and glutinous rice flour. Mix these together until well combined.
Make a well in the dry ingredients and then add the mixed wet ingredients from step 2 to the dry ingredients. Mix them together.
Grease and line a muffin pan with muffin cases. (see note 1).
Fill the muffin cases almost to the top.
Bake the muffins for 25 to 30 minutes or until they are golden brown.
Remove from oven once baked and allow to cool in the tin.