01 - Preheat oven to 350°F. Lightly grease a 9x5-inch loaf pan and line with parchment paper.
02 - In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt until evenly mixed.
03 - In a separate bowl, whisk whole milk, vegetable oil, eggs, orange zest, and vanilla extract until smooth.
04 - Pour wet ingredients into dry and stir gently until just combined, avoiding overmixing.
05 - Gently fold in cranberries and nuts if using, ensuring even distribution.
06 - Transfer batter to prepared pan and smooth the surface evenly.
07 - Bake for 45 to 55 minutes, or until a toothpick inserted in the center comes out clean.
08 - Allow loaf to cool in the pan for 10 minutes, then remove and cool completely on a wire rack before slicing.