You could probably pair some grains, vegetables, and fruit with those beans? Sorry to ask, but why are you putting your one year old on a vegetarian diet, if you're not on one? Generally speaking it's best for kids to eat what you eat. For one, it's just easier meal prep. For two, children are just more likely to try foods they see others eat.

A one year old doesn't need a super structured meal. Some rice and a little fruit can go with the beans. I wouldn't worry so much about filling meals as much as exposing your kid to as many flavors as possible before you find out how picky they're going to be in a year. You have a higher chance of avoiding the worst of the picky eating phase if your child has a wider palette.