Hands On: 15 minutes Total: 15 minutes Spray large skillet with cooking spray. Heat over medium-high heat. Add onion; cook and stir 5 minutes, or until tender. Add tomatoes and simmer 5 minutes, or until slightly thickened. Stir in pesto just before serving. Serve with 1 pound dry pasta (such as fusilli, spaghetti or penne), cooked according to package directions. May also be served over cooked chicken breasts or fish.
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