Fresh sage and toasted walnuts pair up to create an exquisite sauce for this pasta main-dish recipe.
Place walnuts in a large, dry nonstick skillet over medium heat. Cook 4 to 5 minutes, until toasted, shaking pan constantly. Remove walnuts; set aside.
Cook pasta in boiling salted water according to package directions, about 10 minutes. When pasta is almost done, melt butter in large nonstick skillet over medium heat. Add sage, lemon juice, salt and pepper. Cook a minute or two to blend flavors. Remove from heat.
Drain pasta, reserving 1/2 cup pasta cooking water, then add pasta to butter in skillet. Gradually add pasta water. Stir in cheese and toss to combine. Garnish with toasted nuts and serve.