I like to do an aubergine stir fry: medium chunks of aubergine cooked with mushrooms (enoki ones if you are being fancy), sesame seeds and a tablespoon of barley miso mixed to a paste with water, or just soy sauce if you prefer. If you use toasted sesame oil for the frying it tastes even better. When cooked I add some raw chopped spring onion. This is good with rice (egg fried or plain) or noodles.
Roasted tomato soup (you do need quite nice tomatoes for this):
Halve the tomatoes and put cut side up in a roasting tray with a couple of unpeeled garlic cloves. Brush with olive oil. Roast at 200C until tomatoes are soft and starting to colour on top, about 25 mins. Take out pan, unpeel cloves and return to pan with a litre of veg stock. Cook for another 10 mins then remove from oven. Add any herbs you like (basil is best) Blend in batches with a stick blender. This is at its nicest sieved smooth, but you can skip that stage and just eat it as soon as it is blended.
You can use the same technique (roast veg, add stock, return to oven) with butternut squash chunks. Add spice, e.g. cumin seeds, chilli flakes along with the garlic.
Have you ever done pan pizza? You make up a quick yeast free pizza dough, and instead of leaving to rise then baking, you spread the dough on an oiled cast iron griddle and cook it on the hob while heating up the grill. After 10 minutes on the hob add your toppings of choice and place under the grill to cook the top. Tomato paste, a jar of artichoke hearts, red onion and some black olives would make a nice combination.
Do you eat pasta? I like it with fairly simple flavours rather than involved sauces: either garlic, oil and chilli or lemon zest, parsley (either kind) and black pepper.
Merchant Gourmet do very nice sachets of cooked grains (haven't checked but I don't think most of them have soya in them). They are great because they're tasty and easy-you can just microwave and add to the rest of your meal to bulk it out.
You could do roasted veg (as in a ratatouille): peppers, courgettes, onion and tomato and serve with lentils and herbs sprinkled over, or roasted carrots, beetroot and parsnip served the same way. I also use a sachet of e.g. spelt as the base for a salad with raw, finely chopped vegetables and herbs.
Dahl: use red lentils that cook the fastest. Dry fry spices (or curry powder) then add oil and onion. When onion is soft add the lentils and water, cook as per packet instructions. Serve with wholemeal roti and a green vegetable like green beans fried with nigella seeds and lemon juice.
Fritatta: parboil potato, mix with your eggs and some finely chopped rosemary, cook (without stirring/lifting as you do with omelette) until firm underneath then place under a grill to cook the top. Serve with green salad.
Also, try kedgeree without the fish. Just allow an egg per person and top with crispy fried onion.