Merly, I empathise with the food thing. My three have at different times been tricky eaters and its hard to get the balance between saying "thats dinner and I'm not making anything else" and trying new things so you can work out what is a hit.
The best thing I read is that children's taste buds taste flavours acutely. So anything you give them will taste stronger to them. 'We' might love cauliflower cheese but its amplified for them (strong cauli, not a good taste). And my other best thing I read is to look at the week and gauge fruit/veg intake over 7 days not each day.
Like pixi, plain basics work in this house too. Baked potatoes are a hit, mini pitta bread can be a novelty because they are like little pockets, cherry tomatoes, pizza with carrots and cucumber sticks, carbonara pasta with peas. I used to sometimes serve tea in the bath because it caught them by surprise and everything became fun and they would eat better (granted not when they were one!!).
I do think at age one, they can go through a stage of disliking such a lot of foods, I think its because everything is hard work and they can't tell you what it is that tastes good or bad other than chucking it somewhere. My DT2 hasn't ever eaten poultry/meat or fish with any success. We have progressed onto sausages and mince based things and he'll manage a bit tuna now so its a start. He does love garlic Philadelphia and adores olives so its not that he doesn't have adventurous taste! His all time favourite food is porage with raisins and a bit sugar.
Ryvita with pumpkin seeds go down well in this house, as do dull old Jacobs crackers. You could serve with grapes, strawberries, raisins, bits of banana and if he hates it all at least you've not spent hours cooking. If he won't eat cheese, will he eat macaroni with a cheese sauce?
I tried not to worry about the small selection of stuff that he would eat and encouraged a few peas (or whatever) slowly he has developed into other flavours.
Do you have a children's cook book? Sometimes the recipes are rubbish but they can give you ideas.