Creamy Pesto over Pasta and Salmon

In medium-size skillet, heat oil over medium heat. Add garlic; saute until garlic starts to brown. With slotted spoon, remove sauteed garlic to food processor fitted with chopping blade and set aside. In same skillet, saute salmon 4 to 5 minutes on each side or until just cooked through. Remove from heat; cover and keep warm. Cook bow-tie pasta following package directions. Meanwhile, add walnuts to garlic in food processor and process until finely chopped. Add basil, cheese, lemon juice, and pepper; process until leaves are finely chopped. Add yogurt and process pesto until smooth, stopping once to scrape side of container with rubber spatula. Drain pasta well. Return pasta to same saucepot. Add pesto and mix well to coat evenly. Break salmon into pieces and toss into pasta. Transfer pasta to serving bowl. Garnish pasta with basil leaves, if desired. Serve immediately.