Macaroni Salad Recipe For 100: Crowd-Pleasing Creamy Side for Large Gatherings

Feeding a crowd of 100 doesn’t have to be stressful, and this macaroni salad is the foolproof solution for your next gathering. I’ve scaled this recipe to serve exactly 100 portions, ensuring everyone gets a taste without leftovers going to waste.

The secret lies in the balance—elbow macaroni cooked al dente, a creamy dressing with just the right tang, and fresh vegetables for crunch. This version skips the fuss while delivering consistent, crowd-pleasing results every time.

Prep can be done in stages, making it ideal for large events. The macaroni holds up well, and the flavors meld beautifully when chilled overnight. You’ll have a side dish that’s as practical as it is delicious.

Perfect for picnics, potlucks, or buffet-style meals. Here’s how to pull it off seamlessly.

Ingredients for Macaroni Salad Recipe for 100

Feeding 100 just got easier with these simple, crowd-pleasing ingredients ready to go.

For a crowd this size, Costco or Sam’s Club are your best friends—grab the biggest bags of elbow macaroni they have (usually 5lb bags). The mayonnaise and sour cream need to be full-fat for that perfect creamy texture. Hellmann’s or Duke’s mayo hold up best for large batches. Fresh celery and bell peppers should be crisp and bright—check the stems for wilt. Don’t skip the hard-boiled eggs; they add heartiness to balance the pasta.

No celery? Green bell peppers or cucumbers add similar crunch. Swap red onion for green onions at double the amount for milder flavor. Pickle relish can be sweet or dill—just drain it well. If you’re short on eggs, chopped firm tofu works as a vegetarian protein swap. The vinegar is key for brightness; apple cider vinegar works if you’re out of white.

Make this a day ahead—it only gets better. Stored in airtight containers, it keeps 3-4 days in the fridge. Don’t freeze though; the mayo separates. Transport in coolers with ice packs for picnics. If serving from a buffet, keep it on ice to maintain food safety.

Instructions

This method ensures a creamy, well-balanced salad that serves 100 perfectly every time.

Step 1: Cook and Prepare the Elbow Macaroni

Cook the 12.5 lb Elbow Macaroni in a large stockpot of salted boiling water until al dente, about 8-10 minutes. Stir occasionally to prevent sticking, and taste frequently near the end of cooking to ensure it doesn’t over-soften.

Drain immediately in a colander and rinse under cold water for 1-2 minutes to stop the cooking process. This prevents the pasta from turning mushy once dressed. Let it drain completely—any excess water will dilute your dressing and make the salad watery.

Step 2: Prepare and Dice All Vegetables

Finely dice all 20 whole Celery Stalks, 5 whole Red Onion, 8 whole Red Bell Pepper, and 10 whole Carrots. For uniformity, aim for pieces no larger than ¼ inch. This ensures every bite has a balanced mix of textures without overwhelming crunch.

Chop all 50 whole Hard-Boiled Eggs into small, even pieces. I like to separate the whites and yolks slightly for a more dynamic presentation, but uniform chopping ensures even distribution. Drain the 1.5 cups Sweet Pickle Relish well in a fine-mesh sieve to remove excess liquid.

Step 3: Whisk Together the Creamy Dressing

In a very large bowl, whisk together the 4 cups Mayonnaise, 2 cups Sour Cream, 0.5 cup White Vinegar, 0.5 cup Yellow Mustard, and 0.5 cup Granulated Sugar until completely smooth. The vinegar and mustard add tang, while the sugar balances the acidity.

Add the 2 tbsp Salt and 1 tbsp Black Pepper, then taste and adjust seasoning if needed. The dressing should be rich but not overly sweet or salty—remember, the vegetables and eggs will add their own flavors.

Step 4: Combine All Ingredients

Add the drained Elbow Macaroni to the dressing and fold gently with a large spatula until every piece is evenly coated. Then, add all the diced vegetables, chopped eggs, and drained Sweet Pickle Relish. Fold again until everything is uniformly distributed.

Sprinkle the 0.25 cup Dried Parsley over the top and fold once more. The parsley adds a touch of color and freshness, balancing the creaminess of the dressing.

Step 5: Chill and Serve

Cover the bowl tightly with plastic wrap and refrigerate for at least 4 hours, or ideally overnight. This chilling time allows the flavors to meld and the pasta to absorb the dressing fully, resulting in a creamier, more cohesive salad.

Before serving, give it one final stir and adjust seasoning with additional salt or black pepper if needed. Serve chilled in a large serving dish or portion into smaller containers for easy access at your gathering.

Essential Equipment for This Recipe

Large Stockpots

For 12.5 lb of elbow macaroni, you’ll need a commercial-grade 20-quart stockpot. I use a Winco 20Qt with a heavy bottom to prevent scorching. Two pots may be easier to manage than one overloaded one. 🔥

Mixing Bowls

A 24-quart stainless steel mixing bowl is essential for combining all ingredients without spills. Look for one with a flat bottom and high sides. Cambro makes excellent food-safe plastic ones too.

Sharp Chef’s Knife

Dicing 20 celery stalks and 5 red onions requires a razor-sharp 8-10 inch chef’s knife. I trust my Wüsthof Classic for precision. A good knife makes prep faster and safer.

Cutting Boards

Use separate boards for veggies and eggs to prevent cross-contamination. A large 18×24 inch plastic board gives you ample space. OXO Good Grips boards have non-slip edges that I love.

Fine-Mesh Sieve

Draining 1.5 cups of pickle relish requires a fine-mesh sieve to remove excess liquid. A 12-inch diameter sieve handles large batches efficiently. I keep mine from Cuisinox for durability.

Large Spatula

Folding 12.5 lb of pasta into dressing demands a sturdy, high-heat silicone spatula. A 14-inch length works best. Ateco makes one that won’t bend under pressure. ✨

Frequently Asked Questions