Preheat oven to 325. Grease a loaf pan with butter and set aside.
In a large mixing bowl, whisk together the flour, cinnamon, baking soda, baking powder, and salt.
1-1/2 cups whole-wheat flour, 1 1/2 teaspoons ground cinnamon, 1 teaspoon baking soda, 1/4 teaspoon baking powder, 1/2 teaspoon salt
Using a fork, mix in the eggs, applesauce, melted butter, and syrup until well combined, taking care not to overmix. Gently fold in the raisins.
1/2 Cup 1 stick butter, melted, 2 eggs, 1 cup unsweetened applesauce, 1/3 cup pure maple syrup, 3/4 cup raisins
Spoon the batter into the prepared loaf pan. Bake until a skewer inserted into the center comes out clean, 45 to 55 minutes.