Heat oven to 350. Lightly grease a muffin pan for 6 muffins.
In a medium bowl, stir the applesauce, coconut sugar, oat milk, peanut butter, coconut oil, and vanilla until well combined. Microwave to warm if the coconut oil hardens after meeting the cold ingredients.
Stir in the oat flour, almond flour, cacao powder, flax meal, baking soda, baking powder, and salt until combined. Fold in the chocolate chunks. Let the mixture sit for 5 minutes.
Divide the batter between the 6 greased muffin cups, then top with more chopped dark chocolate.
Bake for 20 minutes or until a toothpick inserted in the center comes out clean--the chocolate pieces will be melty.
Carefully remove the muffins from the pan, then cool completely on a wire rack.
Heat any leftovers in the microwave before enjoying if you wish!
