Cook pasta al dente, according to package instructions.
In the blender, combine cream and basil. Process well.
In a deep skillet, heat oil.
Add onion and garlic. Saute for a few minutes, until softened. Add green beans and saute for 2 minutes.
Add tomatoes and basil cream. Bring to a boil. Reduce to a simmer and cook for 5 minutes.
Add beans and pasta. Cook for 1 minute, until heated through.
Add cheese, salt and pepper. Stir to combine.