Preheat oven to 375°F. Cut biscuits in half, roll into balls, and brush with melted butter mixed with parsley. Arrange around a skillet, season with salt and pepper.
Place brie in the center of the biscuits, remove top rind, and bake until melty, about 8-10 minutes.
Add cranberry sauce and cheddar to the melted brie, fold gently, top with rosemary, and bake 5-7 minutes more.