- Cook pasta according to package directions, omitting salt; drain.
- Meanwhile, blend flour and salt into chicken broth.
- Melt butter in medium-size saucepan over medium heat. Add garlic; sauté until golden brown, about 1 to 2 minutes. Add tomatoes; cook, stirring until tomatoes just start to soften, about 2 minutes.
- Stir broth mixture; pour into saucepan. Cook, stirring, until sauce boils and thickens. Gradually stir in soymilk. Add pasta and basil; cook, stirring until pasta is evenly coated with sauce.
- Sprinkle with pepper, as desired. Serve immediately.