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Crockpot Flat Iron Steak and Mushroom Gravy

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Our recipe for Crockpot Flat Iron Steak and Mushroom Gravy is one to save with only 5 ingredients and super easy prep. 

flat iron steak on a bed of mashed potatoes with mushrooms and gravy
Flat Iron Steak and Gravy

This Crockpot Flat Iron steak recipe is made with simple ingredients for an easy weeknight dinner.

Some Crockpot recipes require longer than others. This one is ready to eat in just a few hours and great for Sunday dinner at our house. I put it on before we leave for church and it’s ready when we get home.

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I love creating recipes with the least amount of ingredients possible without sacrificing flavor. This is one of those recipes with only 5 ingredients.

Ingredients

  • 2 lb. Flat Iron Steak
  • 2 cans (10 oz.) Beef Gravy, I use this brand
  • 1 pkg. sliced Portobello mushrooms (optional)
  • Salt and black pepper to taste

Optional Ingredients

Add a package of onion soup mix if your family enjoys those tiny little tasty onions and the flavor they add.

Cut up a small onion or bell peppers to complement the mushrooms if you like.

Marinade the steak for 30 minutes before cooking in any of these sauces; soy sauce, Worcestershire sauce or Italian dressing.

Round steak may be substituted in this recipe for the flat iron steak.

How to cook flatiron steak. Crockpot Flatiron steak recipe. Mushrooms optional. How to cook flatiron steak in the Crockpot.

I use two cans of beef gravy so the steak and mushrooms will be completely covered while cooking. My hubby loves to have enough gravy for his mashed potatoes too.

Step 1

Insert a disposable Crockpot liner into your crock for easy clean-up.
Set the temperature to the lowest setting.

Step 2

Place the Flat Iron steak into the Crockpot and cover with the mushrooms. Season with salt and black pepper.

Step 3

Cover with the lid and cook on the lowest setting for 3-4 hours until tender.

How to cook flatiron steak. Crockpot Flatiron steak recipe. Mushrooms optional. How to cook flatiron steak in the Crockpot.
Flat Iron Steak and gravy with mashed potatoes

I serve my Crockpot Flat Iron Steak and Mushroom Gravy on top of a bed of Homemade Mashed Potatoes which is another recipe with only a few ingredients.

Serve a complete meal with two vegetables, meat, and bread to stretch a small amount of the meal. We like mashed potatoes and green beans along with dinner rolls with our meal.

flat iron steak on a bed of mashed potatoes with mushrooms and gravy

Crockpot Flat Iron Steak and Mushroom Gravy

Prep Time 5 mins
Cook Time 2 hrs
Total Time 2 hrs 5 mins
Servings 4 people

Ingredients
  

  • 1 Flat Iron Steak
  • 2 cans Beef Gravy I prefer the name brand
  • 1 pkg. Mushrooms, cut into pieces
  • 1 tsp. Salt
  • 1 tsp. Pepper

Instructions
 

  • Set the Crockpot to low setting.
  • Place the Flat Iron Steak into the prepared Crockpot.
  • Add cut up mushrooms.
  • Pour gravy over all to cover completely.
  • Sprinkle with seasonings.
  • Cook on Low setting for about 3-4 hours until fork tender.
  • Serve and enjoy!

Save this easy dinner idea to your recipes Pinterest board for quick reference later. Just click the picture below.

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How to cook flatiron steak. Crockpot Flatiron steak recipe. Mushrooms optional. How to cook flatiron steak in the Crockpot.

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7 Comments

  1. This is making me hungry. I have not had a crock pot meal like this in a while since my crock pot stopped working. Not good for the Fall – got to get a new one.The recipe looks easy and tasty!!! I like gravy on my potatoes too!

  2. OK – I’ve found what I’m going to make for lunch Sunday! The family eats lunch with us after church every Sunday. We’ve grown way too big to go out to eat, plus I hate waiting for a table that’s large enough to hold all of us. I always cook the meat or poultry in the crockpot and I don’t like to get in a rut and make the same thing every week. I have a feeling that everyone in the family is going to love this one. Thanks!

    1. It really is great for Sunday dinner because it’s ready so fast in just a couple hours. Sunday dinners at home are the best anyway. I know what you mean about waiting for a table on Sunday with a large crowd.

    1. Carlee, it really is considered southern comfort food to have meat with gravy and mashed potatoes. It’s one of those stick-to-the-ribs meals that leaves a smile on your face too.

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