chicken cacciatore
chilli con carne (or do a veggie one but add sultanas)
any sort of curry (you can just buy a sauce until you feel a bit more confident experimenting)
veggie curry or dhal


oh, and I find the little tubs of rice that you can buy that you microwave for 40 seconds are perfect. Any of the above go with the rice.

Oh, and if you want stuff you can just defrost at work - you can actually bulk freeze sandwiches. I was a bit dubious but they're great. I buy a roast chicken then mix it with mayo, apple, avocado and carrot and make a whole load of them. You can do the same with tuna. Or turkey, cranberry and carrot. Or whatever really - but avoid tomato, it goes soggy when defrosted.