Combine first 3 ingredients (rosemary through oil) in a medium saucepan. Bring to a boil over high heat. Reduce heat to medium and add orzo. Cook orzo for 9 minutes or until al dente (or, if using another type of pasta, check package directions for how long to cook pasta). Do not drain once pasta is ready; it will be like a soup. Serve immediately once cooked.
I like fresh cooked carrots, frozen peas, chopped cabbage, cheese ravioli, shallots, and fresh green beans in this soup. It's very versatile, so add your favorites, or add whatever you have leftover in the 'fridge.