Per serving
These are the BEST brownies! Made with my favorite mix and even richer thanks to crushed Oreo cookies. Extremely easy and always turn out great!
Preheat the oven to 325 °F. Prepare the brownie mix according to the package instructions, adding the egg, oil, and water.
Roughly crush the Oreo cookies in a large bag by hand or with a rolling pin. I like to leave some pieces fairly large. Add them to the batter and mix well. The batter will be thick.
Pour the batter into a greased square baking pan (about 8×8 in) and bake for 30–40 minutes. Check doneness by inserting a knife into the brownies; if it comes out almost clean, they are done. If in doubt, I would say underbake!
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