Low calorie, freezable, relatively easy to cook meals?

lookitsbecc

As a mother to a toddler I don't have much time to dedicate to cooking everyday, meaning most of my meals are ready meals, packet foods or just picking on junk all day. Does anyone have any recipes that I can cook in bulk and then freeze? (for example, bolognaise made with lean mince, cut into portions and frozen in order to microwaved for convenience).