Preheat oven to 375°F. Line 2 baking sheets with parchment paper.
In a bowl of an electric mixer OR in a mixing bowl using a fork, beat together oil, sugars, eggs, and vanilla.
Add flour, oats, baking soda, and chocolate chips. Mix to combine.
For giant cookies, you can either eyeball the amount or use an ice cream scoop (not a cookie scoop) to scoop up the dough. You should place 6 cookies on each baking sheet.
Bake for 10-15 minutes. Cookies will still be mostly soft when you take them out but will harden as they cool.