Americanized versions of pasta e fagioli -- often called pasta fazool -- usually disappoint. Typically, the beans have no flavor, the pasta is mushy, the broth is too tomatoey, and the soup is bland.
Pasta fazool should be hearty and thick, almost stew-like, each spoonful laden with pasta and beans. The soup should be full of harmonious flavors, with no one taste standing out.
Start with pancetta or bacon, and sauté the vegetables in the rendered fat. Add diced tomatoes and canned beans together so they absorb the most flavor, and use a 60/40 ratio of chicken broth and water (with a Parmesan cheese rind to boost flavor). Finish with parsley and minced anchovies.