Help-cooking frozen left overs

[Hulaballoo]

Hi my daughter has a school residential trip and due to her food allergies, I need to make and freeze her dinner meals. I've made chicken casserole, sausage casserole, lasagne and mince sauce. I will be making meatballs to go in a tomato sauce too and spaghetti. I've put the lasagne and the casseroles into foil trays with lids but I'm not sure what instruction to put on top for heating? Is it about 180c for 45 minutes from frozen and 30 mins of defrosted? 😐 everything has been cooked fully before hand. Any tips suggestions? Please? X

As long as the food is piping hot all the way through it will be safe to eat, the times you've suggested sound about right but tell her to check the centre with a thermometer (I would just cut it open and could tell straight away if it's piping but if she doesn't feel confident doing that she can use a thermometer)

Instead of the thermometer, if she puts a knife into the centre and then briefly and, when she removes it, steam is coming out then it's a pretty good indicator that it's hot enough

Ok thank you everyone, she's 9... I'm hoping that the teachers will double check it's cooked but wanted to stick hearing instructions on the foil trays to make it really clear... Just hope 45 mins is enough.