Your best thing to do would be to eat from a list instead of just eating

Set up a protein a carbohydrate, a green, etc and pick one from each list.
Its a pretty standard method, but i would recommend taking some form of powder, be it whey, isolate, etc. its a good way to ensure youre getting what you need for your workouts rather than the unhealthy way of just gaining weight random turning it into muscle after.... which is much harder to do when youre unsure of what nutrients youre getting.