Preparation Cook pasta in medium pot of boiling salted water until just tender but still firm to bite, stirring occasionally. Drain, reserving 1 cup cooking liquid. Melt butter with oil in large skillet over medium heat. Add garlic and thyme; sauté until fragrant, about 1 minute. Add pasta, cream, and cheese. Toss until sauce coats pasta, adding reserved cooking liquid by 1/4 cupfuls if dry. Mix in walnuts, then basil. Season pasta to taste with salt and pepper and serve.
Preparation Cook pasta in medium pot of boiling salted water until just tender but still firm to bite, stirring occasionally. Drain, reserving 1 cup cooking liquid. Melt butter with oil in large skillet over medium heat. Add garlic and thyme; sauté until fragrant, about 1 minute. Add pasta, cream, and cheese. Toss until sauce coats pasta, adding reserved cooking liquid by 1/4 cupfuls if dry. Mix in walnuts, then basil. Season pasta to taste with salt and pepper and serve.