In a medium bowl whisk flour, baking powder, baking soda, and salt. In a separate large bowl mix egg, maple syrup, vanilla, yogurt, and applesauce.
Add dry ingredients to wet ingredients and stir until just combined. Do not overmix. Fold in berries.
Pour batter into prepared muffin tin, filling cups about ¾ full.
Bake 15 minutes or until tops are golden brown and toothpick inserted in the center comes out clean. Remove from oven and let cool in tin 5 minutes before removing. Makes 12 muffins.