Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking dish.

In a large bowl, whisk together the granulated sugar, brown sugar, and vegetable oil until well combined.

Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.

In a separate bowl, whisk together the flour, baking powder, and salt. Gradually add the dry ingredients to the wet mixture, stirring until just combined.

Fold in the chopped pecans, ensuring they are evenly distributed.

Pour the batter into the prepared baking dish and spread evenly.

Bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.

Let cool before slicing and serving.