Cook some brown rice in the microwave, and for the last 5 mins add in diced carrots, capsicum, peas, corn etc. Then serve with wilted silverbeet. - this is also a great side-dish for your family with steak or lamb.

Stir some relish through the rice for added flavour. Dead easy

Otherwise there's Eggplant parmigan (without the cheese though, or soy cheese?) - just cut thick eggplant slices, salt them and then grill/fry and top with tomato sauce - you can cook chicken parma for your family and eggplant for your sis at the same time.