My DH is the same way. I just fix 2 vegetable - one for him and one for me. It's a bit of a nuisance but I've gotten used to it. I often have to fix 2 completely different meals. Last night I made him sausage and waffles (his favorite) so I had sausage and eggs.

One serving of a vegie is easy in the microwave. Just lay them on a plate, drizzle with olive oil or melted butter and seasonings and cook on high 2 or 3 min. I have a steamer inset for a saucepan and just put in a serving of broccoli or cauliflower and steam them. I like those better steamed. Asparagus works good in the micro.

Hope this helps.