A few pantry staples like canned tuna, olives, and sun-dried tomatoes make this a go-to dinner on hectic nights.
HACK Triple the mustard, vinegar, and oil for the vinaigrette and store the leftover dressing in the same jar for salads later in the week. TIP: Change up this salad by including canned artichoke hearts, hard-boiled eggs, cherry tomatoes, and boiled potatoes.