Pre-heat oven to 350 degrees. In large bowl, beat the butter, brown sugar, and granulated sugar together on medium-high speed until light and fluffy. With the mixer on low, add the eggs, one at a time, and the vanilla.

Sift the flour, baking powder, cinnamon, and salt together into a medium bowl. Slowly add the dry ingredients to the butter mixture at low to medium speed. Add the oats, raisins, and pecans and mix just until combined.

Using a cookie dough scoop or tablespoon, drop 2-inch mounds of dough onto sheet pans lined with parchment paper. Flatten slightly. Bake for 9 minutes until lightly browned. Transfer cookies to a rack and cool completely.