Preheat the oven to 325 degrees.

Mix together the flour, baking powder, and salt in a medium sized bowl and set aside.

In the bowl of an electric mixer (or using a hand mixer) beat together the butter and both sugars until fluffy.

Beat in vanilla and cinnamon. Add eggs, one at a time, scraping the bowl after each one.

Add the flour mix into the creamed mixture in 2 to 3 batches, mixing it until just combined. Mix in the oats and butterscotch chips until just combined.

Use your preferred size cookie scoop (or a regular spoon) to drop portions of dough onto a lightly greased cookie sheet, spacing them a couple inches apart. Bake for 13-15 minutes.