[header] How to make chewy chocolate chip oatmeal cookies [title] Preheat the oven to 325 ° f (165 degrees c) and get a baking sheet out. [title] In a medium bowl, cream together the butter and sugars with a wooden spoon until they're smooth. [title] Beat the eggs in a small bowl with a whisk. 
[title] Add the eggs to the butter and sugar and stir them in until they're blended. [title] Stir in the vanilla until it is completely incorporated into the batter.