Preheat your oven to 350°F (175°C) and grease a 9x13-inch baking dish.
Mix sugars, eggs, melted butter, and oil in a bowl until smooth.
Add vanilla extract and self-rising flour, stirring until fully combined.
Fold in the chopped pecans, making sure they’re evenly distributed.
Pour the batter into the prepared baking dish and spread evenly.
Bake for 35-40 minutes or until a toothpick inserted in the center comes out clean.
Cool for at least 10 minutes before slicing.
Enjoy warm or at room temperature—no frosting needed!