Preheat oven to 400ºF. Grease two 12-cup muffin tins.
In a large mixing bowl, combine eggs, applesauce, melted coconut oil, and sugar and mix well.
Add a cup of flour, followed by baking powder and salt.
Next, alternate adding milk and the remaining three cups of flour, being sure not to overload your mixer while mixing together on a low setting.
Fold in the blueberries, taking care to not over-mix as you want to keep the blueberries intact.
Soon batter into greased muffin tins, filling each ¾ full.
Bake in preheated oven for 18-22 minutes.
Enjoy!