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Blackened Shrimp Over Old Bay Mashed Potatoes

By Marley Goldin
on January 25, 2021
last updated on May 22, 2021
4 from 3 votes

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This Blackened Shrimp Over Old Bay Mashed Potatoes highlights my favorite seasoning in a fluffy bed of potatoes - the perfect base for crispy spiced shrimp - and yes, the combo is out of this world!
Blackened Shrimp Over Old Bay Mashed Potatoes - Featured Image

Sick of having the same dinners over and over? Spice it up tonight with the Blackened Shrimp over Old Bay Mashed Potatoes!

It’s brimming with flavor and the perfectly seasoned fluffy mashed potatoes are the best accompaniment to this shrimp.

Blackened Shrimp Over Old Bay Mashed Potatoes - Portrait

Growing up in Maryland, Old Bay Seasoning was such a staple in my house. I have the best memories of big family crab feasts on the back porch.

Every summer we would lay down the newspaper, dig out our mallets and crackers, and spend hours fishing for crab meat to dunk in melted butter and Old Bay Seasoning.

I’m always looking for reasons to integrate this awesome seasoning into my meals, as just the smell of it is nostalgic for me. And the taste!! Well, Marylander or not, it’s undeniably delicious.

And if you’ve never tried this seasoning before? Well, this Blackened Shrimp over Old Bay Mashed Potatoes recipe is a great intro to it!

Blackened Shrimp Over Old Bay Mashed Potatoes Tips and Tricks

Prep Your Shrimp

Always peel your shrimp before adding the seasoning. Some restaurants leave the tails on for aesthetic reasons, and it’s nice to have the tails for a shrimp cocktail, so you have something sturdy to hold on to. But here, it’s just one more barrier to diving in to the amazing combo of the shrimp and the mash. I peel them completely, tail and all.

If you want to prepare your shrimp ahead of time. Peel them and throw them in a large freezer bag with the blackening seasoning to marinate. They can sit there for up to 2 days.

If you’re making this dish all at once, just make sure your shrimp is completely covered in seasoning before adding it to your pan.

Sustainable Seafood

As far as which shrimp to buy, try to avoid imported shrimp entirely. Imported farmed shrimp is often produced in ways that are detrimental to mangrove forests and emits a high amount of pollutants.

It also has to travel a long way to get to you. The most sustainable way to eat shrimp is by seeking domestic farmed shrimp.

Green tip: Shrimp is a seafood we should enjoy in moderation, as it is not the most sustainable. The best way to source your shrimp is from domestic shrimp farms (avoid imported).

For the Spice Blend

We can’t very well have Blackened Shrimp Over Old Bay Mashed Potatoes without blackening seasoning! In order for your shrimp to be considered “blackened“, they have to be coated in seasoning and fried in hot oil to form a dark crust.

The seasoning used can be comprised of a variety of different spices, but usually includes onion powder, cayenne pepper, and thyme.

Since we are already using the Old Bay for our mashed potatoes (and because, let’s face it, I’m a huge fan of this stuff), we will use the Old Bay Seasoning as our base to concoct our spice blend.

Start with 2 tablespoons of Old Bay, and mix in 1 tablespoon of paprika, 1 tablespoon of onion powder, 1 teaspoon of cayenne pepper, and 1/2 teaspoon of thyme. This should yield enough seasoning to cover 1/2 pound of shrimp.

Get Your Oil Hot

In order to get that crispy blackened shrimp, it’s important to get your oil hot before adding them to your cast iron skillet. I usually leave it on medium heat for about 2 minutes before adding my shrimp.

Time Yourself

Because the shrimp is completely covered in seasoning, it’s hard to tell when they are done. For medium sized shrimp, you should be able to cook them fully with just 2 minutes on each side, if the oil in your skillet is pre-heated.

Blackened Shrimp Over Old Bay Mashed Potatoes - On Fork

Peel Your Potatoes With Care

In order to get the smoothest potatoes, make sure you leave no skin on the potatoes, and cut out any bruises or bumps. I use a potato masher to break down the potatoes and then a hand mixer to whip them up. This always gives me that fluffy, velvety texture.

Steer clear of food processors or blenders. This makes your mashed potatoes a texture I can really only describe as gluey, which is not very appetizing.

Keep Things Clean

As with handling any raw meat, make sure you wash your hand after peeling the shrimp and disinfect any surfaces that the shrimp or shells rested on before they were cooked.

Doubling The Recipe

This Blackened Shrimp Over Old Bay Mashed Potatoes recipe, as written, is intended to feed two. You can easily double it to feed your family.

If you end up having extra blackening seasoning, save it! It’s great on firm fish, roasted veggies, and other meat. Just make sure you discard any seasoning that touched the raw shrimp.

Should You Have Leftovers

This meal will last up to 3 days after cooking it covered in the refrigerator. If you only have extra mashed potatoes, those may last up to 5 days.

Making This Dairy Free

Since we are blackening the shrimp in oil (I use coconut oil, but olive oil works, too), all we have to do here is make the mashed potatoes dairy-free.

When making dairy-free mashed potatoes, I recommend using full-fat coconut milk and Earth Balance buttery spread in place of the milk and butter in the recipe below.

Since this Blackened Shrimp over Old Bay Mashed Potatoes has so much flavor from the seasoning, it’s a great recipe to make lighter by cutting back on the butter.

Blackened Shrimp Over Old Bay Mashed Potatoes - Closer Up

Why You Should Make This Blackened Shrimp Over Old Bay Mashed Potatoes

  • It’s got a kick. The spice from that cayenne in the blackening seasoning is just enough to give you a little kick!
  • It use the best seasoning. Maybe that’s just my opinion. But I’m confident you’ll agree.
  • The textures. The crispy little shrimps over those light and airy mashed potatoes is a winner of a combo.
  • It’s filling. Meat and potatoes is always dinner-worthy!

Looking for other excuses to use this stellar seasoning? Check out this Fresh Grilled Mexican Street Corn. And for more dinner inspiration, check out these Creamy Fish and Grits.

Blackened Shrimp Over Old Bay Mashed Potatoes

4 from 3 votes
Recipe by Marley Goldin Course: DinnerCuisine: American


Prep time


Cooking time


Total time



This Blackened Shrimp Over Old Bay Mashed Potatoes highlights my favorite seasoning in a fluffy bed of potatoes – the perfect base for crispy spiced shrimp – and yes, the combo is out of this world!


  • Old Bay Blackening Seasoning
  • 2 tablespoons Old Bay Seasoning

  • 1 tablespoon paprika

  • 1 tablespoon onion powder

  • 1 teaspoon cayenne pepper

  • 1/2 teaspoon thyme

  • Blackened Shrimp Over Old Bay Mashed Potatoes
  • 1/2 pound of medium-sized fresh shrimp, de-veined

  • 3 medium-sized russet potatoes

  • 2 tablespoons coconut or olive oil

  • 1/4 cup – 1/2 cup milk (skim, reduced fat, whole, or full fat coconut milk)

  • 1 tablespoon butter or margarine

  • 2 scallions for garnish


  • In a large pot, bring 10 cups of water to a boil.
  • In a small bowl, whisk together 2 tablespoons of Old Bay Seasoning, 1 tablespoon paprika, 1 tablespoon onion powder, 1 teaspoon cayenne pepper, and 1/2 teaspoon thyme and set aside.
  • Peel your shrimp and discard the shells. Add the peeled shrimp to a medium-sized bowl or freezer bag with 1 tablespoon of the Old Bay Blackening Seasoning you made in step 1.

    Let it marinate while you peel your potatoes.
  • Peel your potatoes and discard the peel. Cut each potato into 4 pieces to reduce cooking time.

    Once your water has come to a rolling boil, add potatoes, cover, and cook until you can easily pierce them with a fork, about 20-25 minutes.
  • Add 2 tablespoons of oil to a cast iron skillet. Turn the heat up to medium and allow oil to heat for 2 minutes.
  • Make sure the shrimp is completely coated in the Old Bay Blackening Seasoning. Add the shrimp to your cast iron skillet and cook for two minutes on each side.

    Remove the shrimp from the skillet and place it on a clean plate.
  • Drain the potatoes and add them to a large bowl. Use a potato masher or fork to smash your potatoes down and remove all the lumps.

    With a whisk or a hand mixer on low, whip the potatoes while adding the milk, butter, and 1 teaspoon of Old Bay Seasoning.

    Start with 1/4 cup of milk, and add more until you have a light and airy texture.
  • Dice the green part of your scallions. Serve the mashed potatoes in a shallow bowl with shrimp on top, and garnish with fresh scallions.

pro Tips

  • Add a pinch of salt to your boiling water to help bring the temperature up quicker.
  • To get the smoothest potatoes, make sure you leave no skin on the potatoes, and cut out any bruises or bumps

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2 thoughts on “Blackened Shrimp Over Old Bay Mashed Potatoes”

  1. I can’t wait to make these potatoes. Many members of my family love Old Bay and will LOVE this Old Bay Mashed potato dish❣️❣️

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