speed to low, add flour mixture, and mix until combined, about 1 minute, scraping down bowl as needed. add oats and raisins and mix until combined, about 30 seconds. give dough final stir by hand.
cover bowl with plastic wrap and let rest at room temperature for 30 minutes. adjust oven rack to middle position and heat oven to 350 degrees. line 2 baking sheets with parchment paper.
working with 2 heaping tablespoons of dough at a time, roll into balls and space 2 inches apart on prepared sheets. press dough to 1/2-inch thickness using bottom of greased drinking glass.
bake cookies, 1 sheet at a time, until edges begin to turn golden 