Ingredients:

  • 1 box (10.25 oz / 290g) brownie mix
  • 1/2 cup (120ml) soda (such as Coca-Cola, Sprite, or Dr Pepper)

Instructions:

  1. Preheat your oven to 325°F (160°C). Line an 8x8 inch baking pan with parchment paper, leaving an overhang on the sides for easy removal.
  2. Pour the dry brownie mix into a large mixing bowl. Slowly pour in the soda and fold the mixture together with a rubber spatula until no dry clumps remain; avoid overmixing to maintain a fudgy texture.
  3. Spread the batter evenly into the prepared baking pan.
  4. Bake for 30–35 minutes, or until the edges pull slightly away from the pan and the center remains slightly soft to the touch.