What is the best way to: fill a muffin cup for cupcakes

OPTIONS:
--Once the batter is mixed, place a paper liner in each of the sections of the muffin pan. Fill the cups 2/3 full of batter and bake as per the directions on the recipe;
--Once the batter is mixed, place a paper towel in each of the sections of the muffin pan. Fill the cups 2/3 full of batter and bake as per the directions on the recipe;
Answer:
Once the batter is mixed, place a paper liner in each of the sections of the muffin pan. Fill the cups 2/3 full of batter and bake as per the directions on the recipe