Using the Microwave Pasta Maker, add pasta and ½ tsp. of the salt. Add water to the max fill line, then microwave 8 minutes or until desired doneness.
Make the sauce
In the base of the Power Chef® System fitted with blade accessory add remaining salt, onion, garlic, spinach, walnuts and oil. Cover and pull cord until well minced and saucy. Add additional olive oil as needed to reach desired sauce consistency.
Toss and serve
Drain pasta, transfer to large bowl. Toss with pesto. Serve warm or cold.