Step 3) While potatoes are baking, prepare cranberry topping. Heat remaining 1 tablespoon oil in large skillet over medium heat. Add onion and celery and cook for 2 to 3 minutes until just tender. Add cranberries, 1/4 cup brown sugar, 1/2 cup orange juice and 1/2 teaspoon cinnamon. Mix well and cook until cranberries are very tender, about 10 minutes. Remove from heat and set aside.