Hawaiian macaroni salad is a creamy, mayo-dressed elbow pasta salad with grated carrot and minced onion โ the standard side dish in a Hawaiian plate lunch. It takes about 35 minutes of active work, feeds eight, and gets better after a few hours in the fridge, which makes it one of the most practical salads you can keep on hand.
Why this recipe works
Two things drive the result here. First, cooking the macaroni well past al dente โ a full 12 to 15 minutes โ gives the pasta enough surface softness to actually absorb the vinegar you toss on while itโs still hot. That absorption step is the difference between a salad that tastes seasoned all the way through and one where the dressing just sits on top. Second, the dressing is loosened with whole milk before it ever touches the pasta. As the salad chills, the pasta keeps drinking in moisture; the milk keeps the mayo from seizing into a stiff, clumpy coat. The result is a dressing that stays glossy and clings to every elbow rather than pooling at the bottom of the bowl.
What can go wrong
- Pasta cools too fast and seizes before absorbing the vinegar. Toss the vinegar onto the drained pasta within 30 seconds of draining. If you spread it on a sheet pan to cool, do the vinegar toss first, then spread.
- Dressing turns gluey after chilling. The pasta keeps absorbing liquid overnight. Before serving, stir in a tablespoon or two of whole milk to loosen it back to the right consistency.
- Onion flavor takes over. The recipe suggests a brief rinse if the onion is very sharp โ do this. Run the minced onion under cold water for 10 seconds and pat dry. It softens the bite without removing the flavor entirely.
- Salad tastes flat even after chilling. Cold mutes salt. Taste again right before serving and add a pinch of kosher salt. What seemed well-seasoned at room temperature often needs a small adjustment once itโs cold.
- Carrots turn the texture mushy by day two. If youโre making a large batch to eat across several days, consider stirring the grated carrot into individual portions rather than the whole bowl. It keeps the texture fresher longer.
About the ingredients
The recipe calls for Best Foods or Hellmannโs full-fat mayonnaise โ this matters more than it sounds. Reduced-fat or โlightโ mayo has a higher water content and a thinner emulsion that breaks down unevenly when chilled, leaving a slightly grainy texture. Dukeโs is a reasonable substitute if thatโs whatโs in your fridge; itโs tangier and less sweet, so you may want to reduce the sugar by half a teaspoon. Whole milk is the right choice for loosening the dressing โ lower-fat milk works but produces a slightly less creamy result, and plant-based milks can introduce off-flavors. Apple cider vinegar is mild and slightly sweet here; white wine vinegar is a workable swap at the same quantity if thatโs what you have.
Keeping leftovers crisp
Store the finished salad in an airtight container in the refrigerator for up to four days. After day one, the pasta will have absorbed most of the dressing and the salad will look drier and denser than it did fresh โ this is normal, not spoilage. Stir in a splash of whole milk (one to two tablespoons per two-cup serving) and a small pinch of salt before eating, and it comes back together well. The carrot softens gradually over time; by day three itโs noticeably less crunchy, which most people find acceptable in a creamy pasta salad but worth knowing if texture matters to you. Make sure to dress the full batch before refrigerating โ unlike green salads, this one is designed to be made ahead and the pasta genuinely needs the chilling time to meld with the dressing. Keeping it undressed is not the move here.
Hawaiian Macaroni Salad with Carrots and Onion
Equipment
- Large pot (at least 6 qt)
- Colander
- Large mixing bowl
- Whisk
- Box grater
- Chef's Knife
- Cutting board
- Measuring cups and spoons
- Rubber Spatula
- Sheet pan (optional, for quick cooling)
Ingredients
Salad & Dressing
- 2 tbsp kosher salt for the pasta water
- 1 lb elbow macaroni
- 2 tbsp apple cider vinegar
- 2 cups mayonnaise Best Foods or Hellmannโs preferred
- ยฝ cup whole milk plus more as needed to loosen
- 2 tsp granulated sugar
- 1 tsp kosher salt for the dressing, plus more to taste
- ยฝ tsp freshly ground black pepper
- 1 cup carrots, coarsely grated about 2 medium
- ยผ cup yellow onion, finely minced about 1/2 small; rinse briefly if very sharp
Instructions
- Bring water to a boil: Fill a large pot with 4โ5 qt of water and bring to a rolling boil (212ยฐF / 100ยฐC). Season the water with 2 tbsp kosher salt.
- Cook the macaroni: Add the elbow macaroni, stir, and cook at a lively boil until very tenderโpast al denteโabout 12โ15 minutes. The elbows should be soft with no chalky core.
- Drain and season hot: Drain well and return the pasta to the warm pot. Sprinkle over the apple cider vinegar and toss to coat. Let the pasta steam off for 5 minutes; for quicker cooling, spread onto a sheet pan for 5โ10 minutes until just warm.
- Whisk the dressing: In a large bowl, whisk mayonnaise, whole milk, sugar, kosher salt, and black pepper until smooth and fully emulsified, 30โ45 seconds.
- Coat the pasta: Add the warm (not hot) macaroni to the bowl and fold with a rubber spatula until every piece is glossy and coated, 1โ2 minutes.
- Add vegetables: Fold in the grated carrots and minced onion until evenly distributed. Taste and adjust seasoning with additional salt and pepper if needed.
- Chill to meld: Cover and refrigerate until the dressing thickens slightly and the flavors marry, at 38ยฐF / 3ยฐC for at least 30 minutes (up to 24 hours). Stir once midway if chilling longer than 1 hour.
- Finish and serve: If the salad tightened up, loosen with a splash of milk and re-season to taste. Serve cool, not icy-cold, alongside plate-lunch favorites or as a picnic side.
Notes
- Cook the macaroni softer than typical pasta salads; this signature tenderness lets it absorb dressing without drying out.
- Season the pasta while warm with vinegar so the tang penetratesโdonโt skip this step.
- Use a full-fat mayonnaise (Best Foods/Hellmannโs) for authentic body and shine. If substituting, expect a thinner texture.
- For a gentler onion bite, rinse minced onion under cold water and pat dry, or microplane a tablespoon directly into the bowl.
- Texture tuning: Add 1โ3 tbsp more milk after chilling if the salad feels dense; it should be creamy and softly spoonable.
- Make-ahead: Best after 4โ8 hours in the fridge; keeps 3 days. For food safety, limit time at room temperature to under 2 hours.
- Ratio cue: For 1 lb pasta, aim for ~2 cups mayo, ~1/2 cup milk, and ~1 1/4 cups total mix-ins.
Nutrition
Common questions
Can I make this the night before?
Yes โ and you should. The salad needs at least 30 minutes to chill but is noticeably better after two to four hours, and overnight is ideal. Just plan to stir in a tablespoon or two of whole milk before serving to loosen the dressing back up, since the pasta keeps absorbing liquid as it sits.
Can I use a different pasta shape?
Elbow macaroni is the right call for this recipe. The small curved tubes hold the creamy dressing inside as well as outside, and their size means every forkful gets an even ratio of pasta to dressing. Larger shapes like rotini or penne donโt absorb the vinegar and mayo the same way and change the texture significantly.
How do I keep the salad from drying out if Iโm serving it over several days?
Keep a small container of whole milk in the fridge alongside the salad and stir in a tablespoon per portion before serving. A pinch of kosher salt at the same time also helps, since cold dulls seasoning and the salad will taste flatter on day three than it did on day one.