Preheat oven to 350⁰F. Line several cookie sheets with parchment paper and set aside.
In the bowl of a stand mixer, cream together butter, vanilla, and sugars, until light and fluffy. Add the eggs one at a time, blending until combined and scraping down the sides of the bowl between additions.
Whisk all the dry ingredients except raisins together in a bowl. Add the flour mixture to the butter mixture, blending until fully incorporated. Fold in the raisins.
Use a cookie scoop or tablespoon, drop cookies by rounded tablespoons onto the prepared sheets, leaving three inch spacing around each cookie. Bake until cookies are nicely browned, 10-12 minutes.
Lift the cookies and parchment paper onto wire racks to cool.
Notes
If you have cake flour handy, use two cups of it, instead of the all-purpose flour and cornstarch.
Recipe by Sprung At Last at https://sprungatlast.com/2015/06/veselkas-oatmeal-raisin-cookies/