Step 1
Arrange a rack in center of oven; preheat to 375°. Grease a mini (24-cup) muffin tin with cooking spray. On a lightly floured surface, roll out crescent dough and pinch together seams. Cut into 24 squares. Press squares into prepared cups.
Step 2
Cut Brie into small pieces and place inside dough. Top with a spoonful of cranberry sauce, pecans, and one piece of rosemary.
Step 3
Bake bites until pastry is golden brown, about 15 minutes.