01 - Preheat oven to 375°F. Line a 12-cup muffin tin with paper liners or grease lightly.
02 - In a large bowl, whisk together flour, granulated sugar, baking powder, baking soda, and salt.
03 - In a separate bowl, whisk eggs, vegetable oil, milk, vanilla extract, orange zest, and orange juice until well blended.
04 - Pour the wet mixture into the dry ingredients and gently fold with a spatula until just combined; avoid overmixing.
05 - Fold cranberries into the batter carefully to distribute evenly.
06 - Divide batter evenly among the 12 muffin cups. Sprinkle tops with coarse sugar if desired.
07 - Bake for 18 to 22 minutes, or until a toothpick inserted in the center comes out clean.
08 - Allow muffins to cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.