my fav thing to do with quinoa is cook about a cup (of dry stuff) with 2 cups water, with a little stock, then stirfry some vegetables ( my favorites would be brocolli, mushrooms and tomatoes, high protein also ) with about a cup of solid tofu, and a sauce made up of soy sauce, garlic, ginger and lemon juice, maybe some chilli powder too if you like the spice, just chuck chuck all these ingredients ( aside from quinoa ) stirfry them for about a minute, then add the sauce ( probably ends up about 1 3rd- 1 half cups sauce, vary ingredients to taste) and stirfry for a couple more minutes, then server over quinoa, makes 2 servings when i make it, though i made this with protein more in mind than carbs, should still have a good hit from the quinoa and veg though
as for lentils, and stuff, i usually like to cook them in a tomato gravy type curry with peas, and some other vegetables
i havent cooked for lentils in a while, i think it was something along the lines of
3 tomatoes blended, with a tablespoon of tomato paste, garlic and an onion, along with indian spices ( garam masala, ground cumin, red chilli powder, turmeric ) cooking and mixing in a pan, then vegetables added (like peas, pre steamed carrot/potato chunks etc, whatever you like) and cooked for a bit, then some flour( i think about half a tbsp) added, and mixed a round, aswell as some red lentils (or whatever you like) boiling in another pot, after cooking for a while, tomato gravy added, aswell as lentils and about half cup of vege stock, then cooked till done - though you take your chances with this recipe, i made this a while ago, i think it was along these lines though.
chick peas are good blended (as hummus or just with some liquid) and put on grilled wraps, and... almost everything