This salad is a fantastic side, and can hold its own as a hearty main course salad.
You can cook your own Canillini beans if you have the time. Here's How to Cook Dried Beans. Or you can used canned beans.
I love roasted Piquillo peppers, as they're very sweet and thick. You can use red bell peppers as a substitute if you'd like to. And if you'd like to roast your own peppers, here's how.