Sift flour, baking powder, salt and allspice into a mixing bowl. Mix in the oats. Make a well in the center and add applesauce, milk, maple syrup, oil and vanilla. Stir with just until combined.Let batter rest for 5 minutes or so, it will thicken a bit. Fold in the blueberries. Don’t worry too much about the blueberries bleeding into the batter, it’s no biggie.