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Corned Beef Tacos with Creamy Spicy Mustard Sauce

These corned beef tacos are served with a creamy spicy mustard sauce, a simple cabbage carrot slaw and topped with microgreens. Celebrate St. Patrick’s Day with a Mexican twist!

I’ve never really been one for St. Patrick’s Day.

The furthest thing from Irish, I just have zero affinity for the holiday, it’s traditional fare and the sickening amount of green food dye that usually accompanies it.

I don’t own more than 1 green shirt and I find leprechauns to be weird as hell.

Unless it’s on the Lucky Charms box, that dude is cool.

*These corned beef tacos are made in partnership with Sir Kensington’s.
These corned beef tacos are served with a creamy spicy mustard sauce, a simple cabbage carrot slaw and topped with microgreens. Celebrate St. Patrick's Day with a Mexican twist!

I do love a good taco though (and all things Mexican as you might’ve noticed lately) and corned beef might be one of the few Irish foods I find absolutely delicious. 

This corned beef hash breakfast sandwich is actually something I look forward to eating all year long. As is creamy Reuben soup!

It’s reminiscent of pastrami and as any good New Yorker would tell you, nothing beats a mile high pastrami sandwich from a legit Jewish deli.

Sir Kensington's spicy brown mustard makes a cream sauce with a kick for these corned beef tacos.
Avocado mayonnaise is used to make a creamy spicy mustard sauce in these corned beef tacos.
Corned beef tacos are served with a carrot cabbage slaw both tossed in a creamy spicy mustard sauce.

So while I’m steering far, far away from any disturbingly bright green colored foods for the holiday, I decided to be at least somewhat festive with these corned beef tacos.

Naturally colored green stuff like this healthy shamrock shake though is permitted.

It’s a fact that anything tastes better when wrapped up in a tortilla (flour or corn).

I went the flour route with these solely because I didn’t want to purchase 50 corn tortillas and that’s about the smallest quantity they come in for some weird reason) but when you drizzle that “anything” with a creamy spicy mustard sauce made with avocado mayonnaise and a kick of horseradish, better becomes an understatement.

The spicy brown mustard sauce totally makes these corned beef tacos. They even have a horseradish kick to them too!

Sir Kensington’s makes all natural, non-GMO verified condiments (which you can find at Whole Foods, Fairway, and Mrs. Green’s stores) and I’ve been a long time lover of their mustard.

It’s my go-to spread on sandwiches and their spicy brown mustard was the perfect ingredient to bring a nice little kick to these corned beef tacos.

I also used their avocado mayonnaise to get that creamy effect in the sauce.

A good taco has avocado in some shape or form, right?

It only made sense.

This St. Paddy's Day, enjoy some corned beef in taco form!

While the sauce pairs perfectly with the salty corned beef, it’s something that definitely isn’t tied down to the holiday.

I’ve already made another batch to use on sandwiches and throw in chicken salads (with some grapes and celery, that would be an amazing lunch!).

Think big.

Corned beef tacos are a fun Mexican twist to the traditional Irish fare for St. Patrick's Day.

Microgreens may be as close as I’m getting to any 4-leaf clovers around here but one bite into these corned beef tacos and I don’t think you’ll miss the traditionalism.

You can always have some Baileys ice cream after dinner if you feel like need to be “festive”.

If you have some pickled shallots or onions on hand, make sure to throw those on top. Any taco is improved with a tangy element like that.

Need an easy corned beef recipe to make these tacos? I really like this smoked corned beef brisket recipe.


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Corned Beef Tacos

Corned Beef Tacos with Creamy Spicy Mustard Sauce

These corned beef tacos are served with a creamy spicy mustard sauce, a simple cabbage carrot slaw and topped with microgreens.
5 from 5 votes
Prep Time 20 minutes
Total Time 20 minutes
Servings 4 servings


  • 2 cups grated carrots (save yourself some time and grab a pre-shredded bag from the grocery store)
  • 2 cups thinly sliced green cabbage
  • 1/4 cup thinly sliced red onion
  • 1/4 cup Sir Kensington’s avocado mayonnaise
  • 3 tablespoons Sir Kensington’s spicy brown mustard
  • 2 tablespoons apple cider vinegar
  • 2 teaspoons prepared horseradish
  • salt & pepper
  • 12 ounces cooked shredded corned beef, (*see note on how to cook corned beef)
  • 8 6 ” flour or corn tortillas
  • microgreens and/or chopped green onion for topping


  • Combine the carrots, cabbage and red onion in a bowl.
  • Whisk together the avocado mayonnaise, mustard, apple cider vinegar and horseradish until smooth. Season to taste with salt and pepper.
  • Add half the sauce to the cabbage mixture and toss until fully coated. Toss half the remaining sauce with the shredded corned beef and reserve what’s left for drizzling over top of the tacos.
  • Toast/char the tortillas on a grill or open flame.
  • Assemble the tacos by placing the slaw on the tortilla first, then the corned beef and topping with the microgreens, green onions and any additional desired mustard sauce.


If starting with uncooked corned beef, the easiest way to prepare is to place beef in a slow cooker, fatty side up with spice packet (most store bought corned beef come with this). Cover with water and cook on low for 10 hours. Remove corned beef, scrape off fat and shred.

Nutrition Facts

Serving: 1SERVING | Calories: 1007kcal | Carbohydrates: 159g | Protein: 38g | Fat: 23g | Saturated Fat: 6g | Polyunsaturated Fat: 13g | Cholesterol: 85mg | Sodium: 1115mg | Fiber: 10g | Sugar: 6g

This website provides approximate nutrition information for convenience and as a courtesy only. Nutrition information can vary for a variety of reasons. For the most precise nutritional data use your preferred nutrition calculator based on the actual ingredients you used in the recipe.

Cuisine Irish
Course Main Dishes
Keyword corned beef tacos, gluten-free corned beef tacos, st. patricks day corned beef tacos

Gina Matsoukas is the writer, founder, photographer and recipe developer of Running to the Kitchen — a food website focused on providing healthy, wholesome recipes using fresh and seasonal ingredients as much as possible. Her work has been featured in numerous media outlets both digital and print, including MSN, Huffington post, Buzzfeed, Women’s Health and Food Network.

Recipe Rating


Tuesday 8th of March 2022

I can't wait to try this. Looks delicious. I just saved your recipe. I'm going to make this soon.


Tuesday 8th of March 2022

What a delicious taco recipe! I ate tons!


Tuesday 8th of March 2022

These tacos look so tempting. Perfect for taco tuesday.

Beth Sachs

Tuesday 8th of March 2022

A tasty way to use corned beef. My whole family love these tacos!


Tuesday 8th of March 2022

This was the first time I used corn beef in Tacos but I absolutely loved it! And brown mustard in this recipe is definitely a game-changer!