Creamy, classic tuna macaroni salad with tender pasta, flaked tuna, eggs, and peas in a tangy mayo dressing. Make it a few hours ahead for the best flavor and serve it as a hearty side or a light main.
Cook the macaroni to al dente following the package directions. Drain, rinse under cold water, and drain well. Cool to at least room temperature, or chill in the fridge.
In a large bowl, combine the tuna, celery, onion, eggs, and peas. Season with a little salt and pepper. Stir in the cooled macaroni.
In a small bowl, stir together the mustard, mayonnaise, and pickle relish. Add about half to the macaroni mixture and toss, then add more until creamy. Taste and adjust the salt and pepper.
Cover and chill until ready to serve. If the salad seems dry, stir in a couple tablespoons of mayonnaise to moisten.
Notes
Tuna: Water-packed albacore keeps the flavor clean and avoids the oily, metallic taste of some canned tuna.
Peas: Use frozen peas, thawed, rather than canned. Corn is an easy swap if you prefer.
Relish: Sweet relish is classic; dill relish works if you want less sweetness.
Make ahead: Best made a few hours ahead so the flavors meld. Cover tightly and refrigerate.
Storage: Keep in an airtight container in the fridge for 3 to 5 days. Do not freeze.
If it dries out: Stir in a tablespoon or two of mayo before serving.