I have a nearly 3 year old and this week have made all sorts- SW lasagne, chilli and rice, chicken wrapped in bacon with SW chips and roasted veg, roast dinner. Tonight we are havin chicken in bacon again with spicy rice, home made salsa and homemade "sour cream and chives" (Lidl fat free cream cheese mixed with chopped chives and garlic salt).
Cooking up a big batch of tomato-based sauce with loads of super free veggies is always a great idea because you can add it to pasta, use it as a base for bolognese or chilli or soup or many other things. You can freeze it too.