Preheat oven to 350°F. Line two cookie sheets with parchment paper. (These cookies stick, so if you are not using parchment paper, be sure to grease your pans.) Stir avocado and oil in a large bowl with a wooden spoon. Stir in both sugars. Add vanilla, egg, and cocoa and mix until smooth (there may be some lumps from the avocado). Stir in baking soda, salt, oats, and cinnamon. Carefully stir in flour. Dough will be wet. At this point you can mix in the chocolate chips if you’re using them. I pressed chocolate chips on the top of each cookie instead of mixing them in. Either way will work! Drop dough by large tablespoonfuls onto cookie sheet. Bake for about 8-10 minutes (mine took 11). Cool before eating. You need to use a spatula to remove them from the cookie sheet, they will stick. Best within 2 days.