01 - Preheat oven to 350°F. Grease and line a 9x5-inch loaf pan with parchment paper.
02 - In a large mixing bowl, whisk together the flour, baking powder, baking soda, salt, ground cinnamon, and ground ginger until evenly distributed.
03 - In a separate bowl, whisk the eggs, milk, maple syrup, melted butter, and vanilla extract until well blended.
04 - Pour wet ingredients into the dry mixture. Stir gently with a whisk until just combined; avoid overmixing to maintain loaf tenderness.
05 - In a small bowl, combine granulated sugar and ground cinnamon for the topping.
06 - Transfer half of the batter into the prepared loaf pan. Sprinkle half of the cinnamon sugar mixture evenly across the surface.
07 - Spread the remaining batter over the previous layer, smoothing the surface. Sprinkle the remaining cinnamon sugar over the top.
08 - Using a butter knife, lightly swirl the cinnamon sugar topping through the batter to create a marbled pattern.
09 - Bake the loaf for 45 to 55 minutes or until a toothpick inserted in the center emerges clean.
10 - Allow the loaf to rest in the pan for 10 minutes. Carefully transfer to a wire rack and cool completely before slicing.