Preparation Heat oil in a 5- to 6-quart heavy pot over moderately high heat until hot but not smoking, then cook onion and garlic, stirring occasionally, until golden, about 3 minutes. Add kale and sauté, stirring, 1 minute. Add frozen vegetables, tomatoes with juice, pasta, broth, water, salt, and pepper and simmer, uncovered, stirring occasionally, until vegetables are tender and pasta is al dente, about 10 minutes. Meanwhile, transfer half of beans to a wide shallow bowl and coarsely mash with a fork or a potato masher, then stir mashed and whole beans into soup and simmer, stirring occasionally, until soup is slightly thickened, about 5 minutes. Season with salt and pepper.
Preparation Heat oil in a 5- to 6-quart heavy pot over moderately high heat until hot but not smoking, then cook onion and garlic, stirring occasionally, until golden, about 3 minutes. Add kale and sauté, stirring, 1 minute. Add frozen vegetables, tomatoes with juice, pasta, broth, water, salt, and pepper and simmer, uncovered, stirring occasionally, until vegetables are tender and pasta is al dente, about 10 minutes. Meanwhile, transfer half of beans to a wide shallow bowl and coarsely mash with a fork or a potato masher, then stir mashed and whole beans into soup and simmer, stirring occasionally, until soup is slightly thickened, about 5 minutes. Season with salt and pepper.