I made a vegetarian lasagne. Checked it at 30 mins, pasta really hard, cheese brown. Took burnt cheese off, added another layer of grated cheese and covered with foil. Put back in oven. Took it out 20 mins later. Took foil off and it removed the entire layer of cheese, still not cooked enough. Added more cheese and put back in 10 mins. Just had a portion, pasta still not soft, although edible. Popped in back in oven.. what can I do?!