Preheat the oven to 350°F. Generously grease a 12-cup Bundt pan, including the grooves and center tube. In a medium bowl, combine the brown sugar, granulated sugar and cinnamon.
2/3 cup dark brown sugar, 2/3 cup granulated sugar, 1 tbsp ground cinnamon
Divide the biscuit dough into 20 roughly equal pieces. Gently flatten each into a disc and place a cube of cream cheese in the center. Fold the dough edges up around the sides of the cream cheese, leaving the top exposed.
24 oz refrigerated flaky buttermilk biscuit dough, 8 oz full-fat block cream cheese
Arrange 10 filled dough pieces, cream cheese side up, in the bottom of the prepared pan. Sprinkle evenly with half of the cinnamon-sugar mixture and pour half of the melted butter over the top.
3/4 cup salted butter
Arrange the remaining 10 filled dough pieces over the first layer, cream cheese side down. Top with the remaining cinnamon-sugar mixture and melted butter.
Bake for about 40 minutes, until the exposed biscuit dough is golden brown and the interior dough is cooked through. Gently pull apart a piece near the center to check for raw dough; the cream cheese filling should remain soft.
Carefully invert onto a serving platter using oven mitts to handle the hot pan. Serve warm.