Quick Tri-Bean Soup

Ah, my first post. This soup is SO easy, and Elliot really likes it (of course, Elliot likes most everything...). Just the same, he's who eats the stuff I make, so he's my only guinea pig most of the time.
The recipe is supposed to feed six. (from 'Saving Dinner' book)

1 onion, chopped
2 cloves garlic, pressed
1 Tbsp. olive oil
1 can white beans, drained
1 can kidney beans, drained
1 can black beans, drained
1 can chicken broth
1 tsp. basil
1 can diced tomatoes
6 Tbsp. Romano cheese
Salt and pepper to taste

In a saucepan, over medium-high heat, cook the onion and garlic in olive oil until translucent.
Add the rest of the ingredients except the Romano cheese and stir well.
Salt and pepper to taste, and heat until nice and hot.
Top each bowlful with a tablespoon of Romano cheese and serve.

Suggestion:
Serve with a big salad and some whole-grain rolls