This is the classic Italian soup recipe (pasta and beans in a tomato base), though we've reduced the sodium and swapped in whole-grain pasta. Tailor it to your taste with anchovy and crushed red pepper as desired.
In a Dutch oven, heat oil over medium-high heat. Add prosciutto; cook for 2 to 3 minutes or until crisp. Using a slotted spoon, transfer prosciutto to paper towels; let drain. Set aside.
Add onions, celery, carrot, and garlic to the Dutch oven; cook over medium heat for 3 to 4 minutes or until softened, stirring frequently. Stir in oregano, anchovy paste (if desired), and crushed red pepper. Cook and stir for 1 minute. Add broth, tomatoes, and pasta shells. Bring to boiling; reduce heat. Simmer, uncovered, about 15 minutes or until pasta is tender.
Meanwhile, use a fork to mash one can of the beans. Stir the whole and mashed beans into pasta mixture. Simmer about 5 minutes or until heated through.
Stir in parsley and lemon juice. Immediately ladle into serving bowls. Sprinkle with Parmesan and the prosciutto.