Preheat your oven to 325°F (165°C) and grease a 9×5-inch loaf pan. Dust the inside with flour.

In a medium bowl, whisk together 2 cups of all-purpose flour, 2 teaspoons of baking powder, 1/2 teaspoon of salt, and 1 teaspoon of ground cinnamon.

In a large mixing bowl, beat together 8 ounces of cream cheese and 1/2 cup of softened butter until smooth and fluffy.

Gradually add 1 cup of sugar, then add eggs one at a time, mixing well after each addition. Stir in 2 teaspoons of vanilla extract.

Gently fold the dry ingredients into the wet mixture until just combined.

Fold in 1 cup of diced peaches, distributing evenly.

Pour the batter into the greased loaf pan and sprinkle 1/4 cup of brown sugar on top.

Bake for 60-70 minutes, checking doneness with a toothpick.

Let the cake cool in the pan for 15 minutes, then turn out onto a wire rack.

Serve warm, optionally dusted with powdered sugar.