Old Bay Shrimp Macaroni Salad (aka Pasta Salad)

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I made this Old Bay Shrimp Macaroni Salad for the first time this year and I haven't stopped thinking about it since. It isn't a family recipe - I genuinely don't know where the idea came from. But it's going to be one. This is the kind of thing I'll be handing the girls in twenty years. Poach the shrimp in Old Bay seasoned water, then boil the pasta in the same pot, so the seasoning runs all the way through instead of sitting on top.

Close-up of Old Bay shrimp macaroni salad with creamy lemon dressing, diced celery, red pepper, and shrimp

The rest comes together while the shrimp and pasta cook - diced celery, red pepper and red onion folded into a creamy Old Bay dressing of mayo and sour cream, brightened with fresh lemon. It goes next to my Best Crock Pot Mac and Cheese and my Pulled Pork Sandwich at every cookout. I'm already planning to run the same Old Bay idea at a potato salad.

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Ingredients in This Old Bay Shrimp Macaroni Salad
Why You'll Love This Old Bay Shrimp Macaroni Salad
How to Make Old Bay Shrimp Macaroni Salad
Substitutions for Old Bay Shrimp Macaroni Salad
Variations on This Old Bay Macaroni Salad
Equipment You'll Need
How to Store Old Bay Shrimp Macaroni Salad
Top Tip
More from Whisk & Wine
More Easy Seafood and Summer Sides
Old Bay Shrimp Macaroni Salad
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Ingredients in This Old Bay Shrimp Macaroni Salad

Eight pantry-friendly ingredients and one bottle of Old Bay. See the recipe card for exact quantities.

Old Bay shrimp macaroni salad ingredients flat lay - shrimp, elbow macaroni, Old Bay seasoning, mayo, sour cream, celery, red pepper, red onion, lemon, milk

Shrimp - peeled and deveined, fresh or thawed
Elbow macaroni - the classic pasta salad shape
Old Bay seasoning - half goes in the cooking water, half goes in the dressing
Mayonnaise - for richness
Sour cream - adds tang and keeps the dressing from feeling heavy
Whole milk - loosens the dressing so it coats every elbow
Fresh lemon juice - wakes up the whole bowl - the sleeper ingredient
Celery - diced small for the crunch
Red bell pepper - diced small for sweetness and color
Red onion - diced small for sharp bite

Why You'll Love This Old Bay Shrimp Macaroni Salad

Old Bay all the way through. The pasta and shrimp both cook in seasoned water, so flavor goes past the dressing and into the noodle itself.
One pot, no second pan to wash. Shrimp poach, then the pasta cooks in the same water. The kitchen stays calm.
Better the next day. Make it the night before. The flavors marry, the celery stays crisp, the bowl wins the potluck.
Crowd-friendly and crowd-tested. Feeds 8 easily. Doubles for a cookout without changing the ratios.
High-protein optional. Swap the mayo and sour cream for Greek yogurt and it eats like a meal.

How to Make Old Bay Shrimp Macaroni Salad

One pot, and it is on the table in under 30 minutes of active work. The hardest part is waiting for the bowl to chill.

Season the Water

Bring a large pot of water to a rolling boil. Stir in 2 tablespoons of Old Bay seasoning.

Poach the Shrimp

Add the shrimp to the seasoned water and poach for 2 to 3 minutes, until they curl and turn opaque. Remove with a slotted spoon and set aside on a plate to cool.

Cook the Pasta

Add the elbow macaroni to the same Old Bay water. Cook per package directions until al dente, then drain.

Build the Dressing

Add the pasta back to the pot and add the mayonnaise, sour cream, milk, the remaining 2½ tablespoons of Old Bay, and the juice of 2 lemons back to the pot. Fold in the diced celery, red bell pepper, and red onion. I like to mix it in the same pot so it looks nice when I spoon it into the serving bowl.

Chop the Shrimp

Once the shrimp are cool to the touch, small-dice them and add them to the bowl with the dressing and vegetables.

Toss and Chill

Add the cooled pasta. Toss until every elbow is coated. Cover and refrigerate at least 1 hour before serving - overnight is even better. Taste before serving and add another squeeze of lemon if it needs brightening.

Substitutions for Old Bay Shrimp Macaroni Salad

Swap freely. Just keep the Old Bay and the shrimp.

Greek yogurt for mayo and sour cream. Use 1 cup of plain whole-milk Greek yogurt. The salad gets tangier and significantly higher in protein.
Different pasta shape. I love using Ditalini for this recipe, but any small pasta will work. Cavatappi, medium shells, or rotini all work. Stick with small shapes that hold the dressing.
Frozen cooked shrimp. Thaw under cold water, skip the poach, chop, and fold in at the end. You'll lose the seasoned-water trick - bump the Old Bay in the dressing to 3 tablespoons.
Plant-based milk. Unsweetened plain works fine; oat milk loosens the dressing without changing the flavor much.
Lump crab instead of shrimp. Skip the poach, fold in 1 pound of picked-over lump crab at the end.

Variations on This Old Bay Macaroni Salad

Same base, different directions.

High-Protein Greek Yogurt Version. Sub the mayo and sour cream for 1 cup plain whole-milk Greek yogurt. Same creaminess, double the protein.
Spicy Old Bay Salad. Add ½ teaspoon cayenne to the dressing or a few dashes of hot sauce. Don't say I didn't warn you.
Shrimp + Crab Combo. Cut the shrimp to 1 pound and fold in 8 ounces of lump crab at the end. Practically a crab boil in a bowl.
Smoky and Loaded. Add ½ cup crumbled crispy bacon and a tablespoon of fresh chopped dill. Brunch-meets-cookout.
Make It a Main. Bump the shrimp to 2 pounds, serve over a bed of arugula or butter lettuce, and call it lunch.

Equipment You'll Need

Five tools, all non-toxic, with a premium and a budget pick for each. Every Amazon link is an affiliate shortlink generated through SiteStripe.

All-Clad 8-Quart Stainless Stockpot - Premium - the one I reach for whenever I'm boiling pasta and poaching shrimp in the same water. Heats evenly, no coating to scratch.
Tramontina Tri-Ply Stockpot - Budget - tri-ply construction at a third of the price. Lives in my cabinet next to the All-Clad and gets used just as often.
OXO Stainless Slotted Spoon - long handle to fish shrimp out of a deep pot without scalding my wrist. Worth every penny.
Anchor Hocking 4-Quart Glass Bowl - doubles as the mixing vessel and the serving dish. Non-toxic glass, dishwasher safe, one bowl less to wash.
Misen 8-Inch Chef's Knife - what I use to small-dice everything. Sharp enough to cut clean celery rings without crushing them.
Microplane Zester - optional but recommended. Adds a teaspoon of fresh lemon zest along with the juice for a brighter bowl.

How to Store Old Bay Shrimp Macaroni Salad

Cooked shrimp and creamy dressings have a short window - here's how to keep this bowl food-safe and tasting fresh.

Refrigerator. Store in an airtight container in the fridge for up to 3 days. Stir before serving to redistribute the dressing.
Make-ahead. Build the salad up to 24 hours in advance. The Old Bay deepens and the celery stays snappy.
Freezer. Don't freeze it. Mayonnaise-based dressings separate and the pasta texture turns grainy when thawed.
If the dressing thickens. Whisk in a tablespoon of milk or a squeeze of lemon juice to loosen it back up.
At a cookout. Keep the bowl on ice. Food-safety rule: no more than 2 hours at room temp (1 hour if it's above 90°F outside).

Top Tip

Don't skip seasoning the pasta water with Old Bay. Most macaroni salads taste flat because the pasta itself is bland and the dressing has to do all the work. When the shrimp and the elbows both cook in seasoned water, flavor goes into every bite - not just the surface.

Can I make Old Bay shrimp macaroni salad the night before?

Yes - and it's actually better the next day. The Old Bay deepens, the dressing settles into the pasta, and the celery stays crisp. Give it a stir before serving and add a squeeze of fresh lemon if it needs brightening.

What kind of shrimp should I use?

Medium or large shrimp (31/40 or 26/30 count), peeled and deveined, raw or thawed from frozen. Pre-cooked shrimp works in a pinch - skip the poach, chop, and fold in at the end, but bump the Old Bay in the dressing to 3 tablespoons to make up for the seasoned-water step.

How long does shrimp macaroni salad last in the fridge?

Up to 3 days in an airtight container. After that, the shrimp and the mayo-based dressing both start to lose quality. Don't freeze leftovers - the dressing breaks and the pasta texture suffers.

Can I make this without shrimp?

Absolutely. Skip the shrimp and the first poaching step, and just cook the pasta in Old Bay-seasoned water. You'll still get a full-flavored salad. Or substitute lump crab, leftover grilled chicken, or canned tuna depending on what you have.