Wash hands thoroughly, lathering with soap and rinsing with running water.
Cook the pasta in a large pot of boiling water a minute or two past package directions. Pour the pasta into a colander and rinse with cold water. Thoroughly drain.
Place the rinsed pasta in a large bowl, cover, and refrigerate for two hours or longer.
While the pasta is chilling make the creamy Greek Yogurt Dressing.
Creamy, Lemony Greek Yogurt Dressing
In a small bowl or measuring cup, juice and zest a lemon.
Add the olive oil, Greek yogurt, garlic clove, honey (or maple syrup), dry mustard, and black pepper. Whisk to emulsify. It should be smooth and light yellow.
Refrigerate until ready to use.
Salad Assembly
Remove the bowl of chilled pasta from the refrigerator.
Top with spinach, cherry tomato halves, minced shallots, and chopped capers.
Shake or whisk the vinaigrette to blend; pour over the pasta salad ingredients and toss, thoroughly coating the pasta and vegetables.
Chill for at least an hour or more before serving.
Notes
For whole-grain goodness, make this salad with whole-grain pasta. I've tried it with durum semolina and whole-wheat pasta, and both are delicious! (I usually make it half and half.)This is a great picnic or potluck salad. Just double the amounts given in the ingredient list (including twice the amount of vinaigrette) to feed 8 to 10 people.To make this a main dish and increase the amount of protein, add cooked salmon, diced chicken, chopped ham, or a hard-cooked egg.