If you're just learning how to cook, this classic macaroni salad recipe will be your perfect start. For extra texture, add some diced tomatoes.,
Cook macaroni in salted water according to package directions; drain and transfer to a large bowl.
Meanwhile, in a medium bowl, whisk together mayonnaise, vinegar, mustard. and garlic powder; stir mixture into cooked macaroni. Fold in celery, onion, and parsley; season to taste with salt and pepper. Serve warm or chilled.