Prep Time 20 minutes mins
Cook Time 40 minutes mins
Resting Time 15 minutes mins
Total Time 1 hour hr 15 minutes mins
For best results, ensure the cranberries are thoroughly pureed to achieve a smooth swirl, and avoid overmixing the brownie batter to maintain a fudgy texture. You can also add a dollop of whipped cream or a scoop of vanilla ice cream on top for a delightful serving presentation.