In a separate large bowl (or a stand mixer, if you have one), beat together the granulated sugar, brown sugar, eggs, vegetable oil, and vanilla extract. You’ll want to mix it all until it’s smooth and creamy. It doesn’t need to be anything fancy, just a good mix. I usually use a hand mixer, but if you don’t have one, you can absolutely do this by hand with a whisk or spoon. It’s a great arm workout, too!