Uneven baking is a huge buzzkill; we know you worked hard, and we are sorry for you. You might be making some mistakes, so look again. Avoid overcrowding the oven and keep space for airflow. Unless you are checking if it is done or turning around the food, stop constantly opening the oven door. Use proper baking supplies and always follow the recipe.
Follow these quick tips, and do some happy baking this Christmas!