Cinco de Mayo Mexican Brownies

Every year my friend has a Cinco de Mayo party on the Saturday nearest to the day. Since I always seem to arrive late, I offer to bring a dessert. I wish I could say I made some fabulous Mexican flan or a from-scratch cake, but in the end I made what I call "Mexican Brownies". I start with a brownie mix. This year I used the Barefoot Contessa Pantry Outrageous Brownie Mix, which was a good choice. It has an extra step of melting chocolate chips and butter to add to the batter, which makes the brownies have an extra chocolate kick. Then I add to the batter about 4 Tablespoons of cinnamon and 1 shot of Kahlua (or similar coffee liquor). Bake as directed on the box. You can decorate them with a dusting of cinnamon or some drizzled chocolate. Delicioso!