Preheat your oven to 350°F (175°C) and prepare an 8 x 5 inch loaf pan by greasing and flouring it.

Whisk together 0.5 cup brown sugar with 1.5 teaspoons ground cinnamon in a small bowl and set it aside.

In a large mixing bowl, whisk together 2 large eggs and 0.5 cup granulated sugar until blended. Stir in 0.5 cup melted butter and 1 teaspoon vanilla extract until smooth.

Gently incorporate 1.5 cups all-purpose flour, 1 teaspoon baking powder, 0.5 teaspoon baking soda, and 0.25 teaspoon salt into the wet mixture until combined.

Fold in 2 cups chopped apples into the batter ensuring they are evenly distributed.

Pour half of the batter into your prepared loaf pan, sprinkle three-quarters of the cinnamon-sugar mixture on top.

Add the remaining batter on top and sprinkle the rest of the cinnamon-sugar mixture, swirling it gently through the batter.

Bake for 35–45 minutes until golden brown and a toothpick inserted comes out clean. Tent with foil if it browns too quickly.

Let the bread cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.