In my freezer I have / had
Fish pie in cheesy sauce
Fish cooked in tomatoes / onion
Chicken cooked in stock with courgette / grapes
home-made chicken 'nuggets
spaghetti bolognaise (made with steak mince / pork mince / lamb mince - take your pick). Just need to cook pasta
Chicken casserole
Beef slow-cooked cooked with potato and carrots
Tomato based vegetable sauce with aubergine
Homemade salmon / tuna fish cakes
Chicken curry (mild)
I freeze in freezer-proof ramekins nowadays, but used to have small pots left from baby-food purees that freeze well.
This means that I hardly 'cook' from scratch just for Matthew.
I make sure that if I am cooking something that freezes well, I take out a portion for him and then serve us. Any other left overs are either for the next day for him and jsut go in the fridge or another portion for the freezer.