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    Home » Recipes » Steak and Mushroom Tacos with Crispy Tater Tots

    Published: Mar 21, 2021 · Modified: Dec 1, 2021 by Cara Lanz · As an Amazon Associate I earn from qualifying purchases.

    Steak and Mushroom Tacos with Crispy Tater Tots

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    steak and mushroom tacos

    When Taco Tuesday hits, these steak and mushroom tacos with crispy tater tots are an easy weeknight dinner the whole family will love. Mildly reminiscent of tater tot casserole (or hotdish, where I’m from), this easy taco recipe is bright and fresh, crunchy and soft, and full of earthy, meaty flavor.

    steak and mushroom tacos

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    You're going to love these tacos

    Easy weeknight dinner. The marinade for these tacos comes together quickly in a zip-top bag before you head to work in the morning. By dinnertime, all you need to do is throw the tots in the oven and stir together a couple of things while the steak and mushrooms are cooking. In the time it takes to cook the tots, your tacos will be fully-prepped. 

    Best marinade recipe ever. You’ll want to use this lime soy marinade on your steaks, chicken, and pork from now on. It’s that good. 

    Tacos with tater tots. I mean, enough said, right? Tacos need a topping with crunch factor, so it might as well be tater tots. If you ever put potato chips on your sloppy joe (if not, please do try it!), then you’ll get why this is so good. 

    Perfect Meatless Monday meal. Tacos aren’t just for Tuesdays. Skip the steak and add a couple more mushrooms, and this is the ultimate meatless meal that even die-hard carnivores will dig into. 

    Vegetarian-friendly. The dual steak and mushroom filling options mean there’s something for everyone. Mix and match to your heart’s content. 

    How to Make Steak and Mushroom Tacos with Crispy Tater Tots

    Prep the mushroom caps. Twist off the stems and use a spoon to scrape away the brown gills from the underside of the portobello mushrooms. 

    steak and mushroom tacos

    Make the steak and mushroom marinade. In a large zip-top bag, combine 1 tablespoon of the canola oil, soy sauce, the juice of two limes, minced garlic, dried oregano, chili powder, cumin, and cracked black pepper. Add the steak and mushrooms and turn the bag over several times until everything is coated in the marinade. Set in the refrigerator for 1-8 hours. 

    Preheat the oven and cook frozen tater tots according to package directions. 

    Meanwhile, heat 1 tablespoon canola oil in a cast iron skillet over medium-high heat. Add the mushrooms and the steak to the pan. Cook the mushrooms for 5 minutes per side. Sear the steak for 2 minutes on each side, then 3-4 minutes per side until the internal temperature is 135 for medium-rare. Let the steak rest for 5 minutes. 

    steak and mushroom tacos

    Wrap flour tortillas in foil and set in the warm oven for 10 minutes. 

    Make green chili cheese sauce. Stir together ½ cup sour cream, ½ cup shredded Monterey Jack cheese, and one small can of green chilis, drained. Heat in the microwave for a minute or until the cheese is completely melted. Stir well. 

    green chili cheese sauce

    Make lime sour cream. Stir ½ cup sour cream with the juice of one lime. 

    Slice the mushrooms and steak into ½ thick strips. Cutting the steak against the grain will ensure tender strips of steak. 

    steak and mushroom tacos

    Assemble the tacos with slices of steak and mushrooms, green chili cheese sauce, tater tots, fresh parsley or cilantro, sliced green onions, salsa verde, and lime sour cream.

    steak and mushroom tacos
    steak and mushroom tacos

    Steak and Mushroom Tacos with Crispy Tater Tots

    Cara Lanz
    When Taco Tuesday hits, these steak and mushroom tacos with crispy tater tots are an easy weeknight dinner the whole family will love. Mildly reminiscent of tater tot casserole (or hotdish, where I’m from), this easy taco recipe is bright and fresh, crunchy and soft, and full of earthy, meaty flavor.
    5 from 1 vote
    Print Recipe Pin Recipe
    Prep Time 15 minutes mins
    Cook Time 45 minutes mins
    Marinating time 8 hours hrs
    Total Time 9 hours hrs
    Course Main Course
    Cuisine American
    Servings 6
    Calories 320 kcal

    Ingredients
      

    • 2 tablespoons canola oil, divided
    • 2 tablespoons soy sauce
    • 2 limes, juiced
    • 1 clove garlic, minced
    • 1 teaspoon dried oregano
    • 1 teaspoon chili powder
    • 1 teaspoon cumin
    • black pepper
    • 8-12 ounces steak -- flank, top sirloin or rib-eye
    • 2 large portobello mushroom caps, stems and gills removed
    • ½ bag frozen tater tots
    • 6 flour tortillas, warmed
    • 4 green onions, sliced
    • fresh parsley or cilantro, chopped
    • salsa verde

    Green Chili Cheese Sauce

    • ½ cup sour cream
    • ½ cup Monterey Jack cheese, shredded
    • 1 4 ounce can green chilis, drained

    Lime Sour Cream

    • ½ cup sour cream
    • 1 lime, juiced

    Instructions
     

    • Twist the stems off the portobello mushrooms. Use a spoon to scrape away the brown gills from the underside of the mushroom caps.
    • In a large zip-top bag, combine 1 tablespoon canola oil, soy sauce, juice of 2 limes, garlic, oregano, chili powder, cumin, and pepper. Add steak and mushrooms and set in the refrigerator for 1-8 hours.
    • Preheat the oven and cook frozen tater tots according to package directions.
    • Heat 1 tablespoon of canola oil in a cast iron skillet over medium-high heat. Add the mushrooms and the steak to the pan. Cook the mushrooms for 5 minutes per side. Sear the steak for 2 minutes on each side, then 3-4 minutes per side until the internal temperature is 135 for medium-rare. Remove the steak and let it rest for 5 minutes. Slice the mushrooms and steak into strips.
    • To make green chili cheese sauce, stir together ½ cup sour cream, ½ cup shredded Monterey Jack cheese, and drained green chilis. Heat in the microwave for one minute or until the cheese is completely melted.
    • To make lime sour cream, stir together ½ cup sour cream and juice from one lime.
    • Fill warmed tortillas with steak, mushrooms, green chili cheese sauce, tater tots, lime sour cream, parsley or cilantro, green onions, and salsa verde.

    Nutrition

    Calories: 320kcalCarbohydrates: 23gProtein: 15gFat: 19gSaturated Fat: 8gPolyunsaturated Fat: 2gMonounsaturated Fat: 8gTrans Fat: 1gCholesterol: 51mgSodium: 657mgPotassium: 428mgFiber: 3gSugar: 4gVitamin A: 517IUVitamin C: 12mgCalcium: 182mgIron: 3mg
    Tried this recipe?Let us know how it was!

    Ingredient notes and substitutions

    Steak. Flank steak, top sirloin, or rib-eye steaks all work well in this recipe. 

    Portobello mushrooms. Instead of large portobello mushroom caps, you can use baby bellas and serve them whole or cut in half, depending on their size. 

    Garlic. I used fresh minced garlic in the marinade, but 1 teaspoon of dried garlic powder will work, too. 

    Lime juice. Fresh really is best. If you don’t have lime juice, use another fresh citrus juice before reaching for bottled lime juice. 

    Canola oil. I chose canola oil for this recipe because I cooked the meat and mushrooms on a pretty high heat. Olive oil can easily burn on high heat. I keep a bottle of 50/50 canola oil and olive oil that would also work. 

    Parsley. Fresh parsley is a nice neutral herb that adds freshness to tacos, or really, any dish. You can definitely use cilantro. I, um, strongly dislike cilantro--but it's my DNA's fault. This article explains why. 

    Recipe Essentials

    Lodge Cast Iron Skillet

    To grill or not to grill? Even in the coldest of temps, you'll find diehard Midwesterners outdoors grilling. But this time, I opted to make the steak and mushrooms indoors on a cast iron skillet --- which is a great plan B to grilling. And if you don't have a cast iron skillet yet, I recommend you get one. You can use it for toasting tortillas, baking cornbread, and cooking veggies on the grill.

    Knife Sharpener

    One of the keys to a tender steak is cutting it against the grain. This shortens the tough muscle fibers and makes it more tender. And the key to a good cut is a sharp knife. This is the knife sharpener we use. We don't have fancy knives, but we keep the ones we have nice and sharp with this.

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    Hi, I'm Cara!

    I love dreaming up easier, and sometimes healthier twists on dishes from the heartland.

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