1. Preheat oven to 350°F. Grease an 8x4 or 9x5-inch loaf pan with nonstick spray or butter.
2. In a medium bowl, toss chopped apples with brown sugar, cinnamon, and ginger. Set aside.
3. In a large bowl, whisk together egg, granulated sugar, vegetable oil, sour cream, and vanilla bean paste until smooth.
4. In a separate bowl, whisk together flour, baking soda, and kosher salt.
5. Add dry ingredients to wet ingredients and stir with a spatula until almost combined.
6. Fold in 3/4 of the apple mixture into the batter.
7. Pour batter into prepared loaf pan and top with remaining apple mixture.
8. Bake for 50-55 minutes, or until a toothpick inserted in the center comes out clean or the internal temperature reaches 200°F.
9. Let bread cool in the pan for at least 30 minutes, then remove and cool completely on a wire rack.
10. For the glaze: Whisk together powdered sugar, vanilla bean paste, and milk until smooth. Drizzle over cooled bread before serving.