How to Make It
Cook the pasta according to the package directions, adding the peas and asparagus during the last 3 minutes of cooking. Drain the pasta and vegetables and run under cold water to cool.
In a large bowl, whisk together the oil, lemon juice, ¼ teaspoon salt, and ¼ teaspoon pepper. Add the pasta, vegetables, Feta, and tarragon and toss to combine.