Spray an 8 1/2 x 4 1/2 loaf pan with cooking spray and set aside.
In a large bowl, whisk together the melted butter, applesauce, eggs, brown sugar and vanilla.
In a smaller bowl, whisk together the flour, cinnamon, baking soda, salt and baking powder.
Add the flour mixture and the raisins to the bowl with the butter mixture. Use a spatula or wooden spoon to stir together until no streaks of flour remain in the batter.
Spread the bread batter evenly into the prepared loaf pan.
Bake on the center rack of the oven for 45 - 50 minutes.
Allow bread to cool in the pan for about 20 minutes.
Remove from pan and finish cooling on a wire rack before cutting and serving.
Notes
Bread is even better the next day. Allow to cool completely and wrap the bread tightly in wax paper or plastic wrap.