1. In a large pot of boiling salted water, cook the penne until al dente.
2. Meanwhile, in a blender, combine the diced tomatoes, sun-dried tomatoes, tomato paste, basil, garlic and olive oil. Puree until smooth. Pour the tomato sauce into a large bowl and season with salt and pepper.
3. Drain the pasta, add it to the sauce and toss well to coat. Serve the pasta piping hot.