I use my freezer a lot - on weekends I tend to make up large batches of my favourite foods and then I split them into one or two portion pieces, freeze them and simply get one out when I get home from work. I do have a microwave but sometimes I pop them into the oven. I have found the following dishes work well (I'm veggie, so these are all meat and fish free). Sometimes I make up parts of a meal and just add some freshly cooked pasta or rice from the storecupboard.
Vegetables in a cheese sauce (saut�d veg like mushrooms, peppers, onions, leek, celery, chillies and steamed veg like cauliflower, broccoli, baby sweetcorn).
Curries - eg chickpea curry, mushroom & potato curry, lentil dahl, okra in spices, carrot and peas in ginger etc etc...
Vegetable Lasagne - layers of lasagne with a homemade tomato sauce, saut�d finely chopped veg, spinach or greens (or pak choi), topped with lots of cheese sauce.
Cheese & Tattie Pie - layers of parboiled seasoned potato interspersed with finely chopped spring onion, gruyere and applewood (or your favourite cheeses). This can be baked in the oven for about half an hour until the potato is cooked, allowed to cool and cut up into portions etc. A variation of this is to add a beaten egg or two to the potato, cheeseand onion mix and then bake - a bit more protein.
All the above can be reheated in the oven - will probably take about 45 minutes from frozen.
Lentil & Vegetable stew - Just make up your favourite stew recipe and freeze into portions. To defrost you simply need to slide into a saucepan with a little water. Great served up with doorsteps of white crusty bread.
May I suggest that you do actually invest in a microwave - they are so cheap nowadays and will save you a fortune on cooking in the oven.