Preheat your oven to 350°F (175°C).

In a mixing bowl, combine the flour, granulated sugar, pumpkin pie spice, baking powder, and salt. Stir until mixed well.

In a separate bowl, whisk together the melted butter, pumpkin puree, milk, egg, and vanilla extract until well blended.

Gradually add your wet mixture to the dry mixture, stirring gently until just combined. Avoid overmixing.

Grease a loaf pan or line it with parchment paper.

Pour the batter into the prepared loaf pan. Sprinkle brown sugar on top along with the optional chopped nuts.

Bake for about 25-30 minutes or until a toothpick inserted in the center comes out clean.

Allow the bread to cool for a few minutes, then transfer it onto a wire rack.

Once cool enough to handle, pull apart the fluffy pieces and serve warm.