Serve this as a side dish, or add some cooked shrimp or chicken for a main course. Look for the sesame oil in the Asian foods section of the supermarket.
Cook pasta in large pot of boiling salted water until tender but still firm to bite, stirring occasionally. Drain very well. Transfer to large bowl.
Whisk 3 tablespoons sesame oil, honey, soy sauce, vinegar and cayenne pepper in small bowl to blend. Season with salt. Mix half of dressing into pasta.
Heat remaining 1 tablespoon oil in heavy large pot over medium-high heat. Add bell peppers, peas and onion and sauté until just beginning to wilt, about 2 minutes. Add vegetables to pasta. Mix in peanuts, basil and enough dressing to coat. Serve, passing any remaining dressing separately.