Prepare Your Oven:

Preheat the oven to 350°F (175°C). Grease and flour a 9x5-inch loaf pan, or line it with parchment paper for easy removal.

Mix the Dry Ingredients:

In a large mixing bowl, combine the flour, pistachio pudding mix, granulated sugar, brown sugar, baking powder, baking soda, and salt. Stir until evenly blended.

Prepare the Wet Mixture:

In a separate bowl, whisk together the melted butter, eggs, milk, and vanilla extract until smooth.

Create the Batter:

Gradually pour the wet mixture into the dry ingredients, stirring until just combined. Avoid overmixing to keep the bread tender. Fold in the chopped pistachios gently.

Pour into Pan:

Transfer the batter into the prepared loaf pan, spreading it evenly. Sprinkle extra chopped pistachios on top if desired for added texture.

Bake the Bread:

Place the loaf pan in the preheated oven and bake for 50-55 minutes, or until a toothpick inserted into the center comes out clean. If the top browns too quickly, cover with foil during the last 10-15 minutes.

Cool and Serve:

Let the bread cool in the pan for about 10 minutes before transferring it to a wire rack to cool completely. Slice into 6-8 pieces and enjoy.