01 - Preheat the oven to 350°F. Grease and flour a 9x5-inch loaf pan or line it with parchment paper.
02 - In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
03 - In a separate bowl, whisk the eggs, vegetable oil, orange juice, milk, orange zest, and vanilla extract until fully blended.
04 - Add the wet mixture to the dry ingredients and stir gently until just combined, avoiding overmixing.
05 - Fold in walnuts, pecans, or mini chocolate chips if desired.
06 - Pour the batter into the prepared loaf pan and smooth the top evenly.
07 - Bake for 45 to 55 minutes, or until a toothpick inserted in the center comes out clean.
08 - Allow the loaf to cool in the pan for 10 minutes before transferring to a wire rack to cool completely prior to slicing.