Preheat the oven to 375 degrees F. Line several baking sheets with parchment paper. In a medium bowl, combine the flour, baking powder, salt, and apple pie spice.
In another bowl, with an electric mixer, cream the butter and both sugars on high until light and fluffy, about 3-4 minutes. Scrape the bowl with a spatula, then beat in the vanilla and eggs. Turn the mixer on low and slowly add in the flour mixture. Scrape the bowl again then turn the mixer on low and mix in the oats and raisins.
Using a 1 1/2 tablespoon cookie scoop, scoop the dough into equal portions and spread the balls out two inches apart on the prepared cookie sheets.
Bake for 12-14 minutes, until slightly golden around the edges. Cool for 5 minutes on the baking sheets before moving.
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Notes
Really, that much butter? Yes guys, really. There's a lot of grain in this recipe when you combine the wheat flour and oats. Therefore it takes an ample amount of butter to ensure the cookies aren't dry. Plus, this recipe makes 45 good-sized cookies. Don't stress, just add the butter.For thicker puffier cookies, chill the dough for 30-60 minutes, then bake for 15+ minutes.If your oven tends to run too hot (and your cookies usually flatten out) chilling the dough is also a good idea!