How Do You Reheat Fully Cooked Frozen Lasagna?
To reheat fully cooked frozen lasagna, first, preheat your oven to 375°F. Remove the lasagna from the freezer and let it sit at room temperature for 20-30 minutes. Cover the lasagna with foil and place it in the oven. Bake it for about 60-75 minutes or until it’s heated all the way through. Remove the foil and return the lasagna to the oven for another 10-15 minutes to allow the cheese to get bubbly and golden. Remove it from the oven and let it cool for a few minutes before slicing and serving.