Macaroni and Cheese Recipe for 100 People: Baked to Bubbly Crowd-Pleasing Perfection

Feeding a crowd requires precision, and this baked macaroni and cheese delivers perfect results every time. My years in professional kitchens taught me that scaling recipes demands careful attention to ratios and timing.

The key to this dish is a velvety cheese sauce that coats every noodle without breaking. I use a combination of sharp cheddar and Gruyère for depth, while the pasta cooks al dente to prevent mushiness during baking.

What emerges from the oven is a golden, bubbling masterpiece with a crispy breadcrumb topping. The sauce stays creamy, the noodles tender, and every serving consistent across all 100 portions.

This method ensures restaurant-quality consistency for large gatherings. The secret is in the layering and even heat distribution.

Ingredients for Macaroni and Cheese Recipe for 100 People

Scaled for a crowd, these quality ingredients deliver restaurant-level perfection every time.

The cheese is the star here—sharp cheddar and Gruyère from Costco or Sam’s Club are your best bets for bulk without sacrificing quality. Look for blocks, not pre-shredded (it melts better). The pasta needs to be high-quality dried elbow macaroni—Barilla or De Cecco hold up best to large-scale cooking. For the milk and cream, organic full-fat from Whole Foods or your local dairy gives the richest sauce.

No Gruyère? Fontina or Monterey Jack at the same quantity work well. Short on sharp cheddar? Mild cheddar plus a pound of pepper jack adds a nice kick. For the Worcestershire, Annie’s vegetarian version is widely available. The panko can be swapped for fresh breadcrumbs (pulse day-old sourdough in a food processor). If you’re feeding gluten-free guests, gluten-free pasta and breadcrumbs do the trick.

This reheats like a dream—cover with foil and warm at 350°F for 20-30 minutes. The sauce will thicken as it cools, so add a splash of milk when reheating. Leftovers keep 4-5 days in the fridge or 3 months frozen. Portion into disposable aluminum pans for easy transport to events.

Step-by-Step Instructions for Macaroni and Cheese for 100

This method ensures a creamy, bubbly dish that serves a crowd with restaurant-quality results.

Step 1: Cook the Elbow Macaroni to Al Dente

Bring a very large stockpot of salted water to a rolling boil. Add the 25 lb Elbow Macaroni and cook for 1 minute less than the package directions for al dente. You want the pasta slightly undercooked because it will finish in the oven.

Stir frequently to prevent sticking, especially with this large quantity. Drain the pasta in a colander and immediately rinse with cold water to stop the cooking process. This prevents the macaroni from turning mushy when baked.

Step 2: Create the Roux and Build the Cheese Sauce

In a large commercial stockpot, melt the 5 lb Unsalted Butter over medium heat. Whisk in the 3.5 lb All-Purpose Flour to create a smooth roux. Cook for 3-4 minutes, stirring constantly, until the mixture turns a light golden color and smells nutty.

Gradually whisk in the 10 lb Whole Milk and 5 lb Heavy Cream, ensuring no lumps form. Bring to a gentle simmer, then reduce heat to medium-low. Stir in the 1 cup Kosher Salt, 0.25 cup Freshly Ground Black Pepper, 1 tbsp Nutmeg, 0.5 cup Garlic Powder, 1 cup Dijon Mustard, and 0.5 cup Worcestershire Sauce.

Step 3: Incorporate the Cheeses for Maximum Creaminess

Begin adding the cheeses gradually, starting with the 20 lb Sharp Cheddar Cheese and 10 lb Gruyère Cheese. Stir constantly until each addition is fully melted before adding more. This prevents the sauce from breaking or becoming grainy.

The sauce should be thick enough to coat the back of a spoon but still pourable. Taste and adjust seasoning if needed, though the cheeses and seasonings should provide a well-balanced flavor. Remove from heat once all cheese is incorporated.

Step 4: Combine Pasta and Sauce, Then Add Topping

In a very large mixing bowl or clean stockpot, combine the cooked Elbow Macaroni with the cheese sauce. Stir gently but thoroughly to ensure every piece of pasta is coated. Transfer the mixture to large, greased baking pans, filling them about three-quarters full.

In a separate bowl, mix the 5 lb Panko Breadcrumbs with 2 lb of the 5 lb Parmesan Cheese (reserving the rest for garnish). Sprinkle this mixture evenly over the top of the macaroni and cheese in each pan. This creates a crispy, golden crust.

Step 5: Bake to Bubbly Perfection

Preheat the oven to 375°F. Bake the pans of macaroni and cheese for 20-25 minutes, or until the top is golden brown and the edges are bubbling. For an extra crispy topping, broil for 1-2 minutes at the end, watching closely to avoid burning.

Remove from the oven and let rest for 10 minutes before serving. Sprinkle the remaining 3 lb Parmesan Cheese over the top just before serving for an extra layer of flavor. The dish should be creamy underneath with a perfectly crisp topping.

Perfect Pairings for These Flavors

Complementary Salads

A crisp green salad with apple cider vinaigrette cuts through the richness beautifully. I toss 10 lbs mixed greens with 3 cups vinaigrette for this crowd size. The acidity refreshes everyone’s palate between bites. 🥗

Vegetable Sides

Roasted Brussels sprouts with bacon and balsamic glaze add a smoky contrast. For 100 servings, I use 20 lbs Brussels sprouts and 3 lbs bacon. The caramelized edges complement the creamy pasta perfectly.

Bread Options

Garlic bread is a must for soaking up any leftover cheese sauce. I prepare 12 large baguettes sliced lengthwise with 2 lbs garlic butter. Warm them just before serving for maximum freshness.

Protein Additions

For meat lovers, pulled pork from my Smoky Pig recipe pairs wonderfully. I recommend 25 lbs cooked pork to serve alongside. The smoky flavors balance the creamy macaroni beautifully. 🔥

Beverage Pairings

Sweet tea is my go-to for Southern gatherings. For 100 people, I brew 5 gallons strong tea with 3 cups sugar. The sweetness contrasts the savory dish perfectly.

Dessert Follow-Up

End with pecan pie—a Southern classic that complements the meal’s richness. I bake 12 large pies (about 8 slices each) using Georgia pecans from my local Charleston market. The nuts add just the right crunch.

Frequently Asked Questions