If you want lemon poppy seed muffins just add lemon juice (about 1/4 cup) and poppy seeds. If you want blueberry muffins add a cup of blueberries. The choice is yours! I like cinnamon and brown sugar muffins. I scoop the batter in the cups and then sprinkle cinnamon and brown sugar on the top before I bake the muffins, yum!