Slow Cooker Flank Steak
3 Comments Jun 17, 2024
Updated Jun 07, 2025
This post may contain affiliate links. Please read our disclosure policy.
You won’t believe the incredible flavor in this ultra-tender slow cooker flank steak. With my special sauce blend, you’ll want to make it again and again!
Why you’ll Love this
- Skip the pricey steakhouse—this slow cooker flank steak is full of flavor
- It cooks in as little as 3–4 hours
- Makes amazing Leftovers
- The tangy sauce is out of this world
Ingredients for Flank Steak
This from scratch flank steak recipe is easily thrown in the slow cooker. Find the full recipe under the recipe card under the images.
- Flank Steak: The highlight of this recipe is two hearty pounds of flank steak. You can also use skirt steak.
- Onions: Thinly sliced and added to the bottom of the slow cooker.
- Garlic: Whole cloves add flavor during the cooking process.
- Soy Sauce: Cut back on the salt by using low sodium soy sauce.
- Beef Broth: Helps create the delicious juices that flavor the beef and can be used as a topping.
- Other Wet Ingredients: Tomato paste, honey, Worcestershire sauce.
- Dry Seasonings: Ground coriander, smoked paprika, red pepper flakes, salt, and black pepper.
How to Make Flank Steak in the Crockpot
- Season the steak with salt and pepper.
- Whisk together the sauce ingredients.
- Layer onions, garlic, steak, and sauce in the slow cooker.
- Cook until tender, slice, and serve with your favorite side.
Cook’s Notes and Substitutions
Flank steak can be hard to find, you can use a skirt steak, cheap bulk pack of top sirloins or even a chuck roast and still have great results.
For a deeper flavor, marinate the flank steak in the sauce mixture for 30 minutes to 1 hour before placing it in the slow cooker.
Add one cup of barbecue sauce to the slow cooker and make wonderful sandwiches from the shredded beef. These sandwiches go great with coleslaw and salt and vinegar chips!
Don’t have soy sauce? Balsamic vinegar is a great substitute and will add great flavor.
My Serving Suggestions
Here is how I serve this tender steak to my guests and family:
Serve this delicious steak over a bed of buttered mashed potatoes drizzled with some of the juices from the crock pot.
It also tastes great with white rice, a baked potato, or egg noodles.
Add a green side dish such as roasted vegetables or a green salad.
Featured Comment
“So easy and delicious! I cooked on high for 4 hours and the meat was actually so tender that I was able to just pull it apart with 2 forks and serve it pulled. Will be adding this to my recipe arsenal 🙂”
– Carly
Slow Cooker Flank Steak
Ingredients
- 2 pounds flank steak
- 1 onion, thinly sliced
- 4 cloves garlic
- ½ cup low-sodium soy sauce
- ¼ cup beef broth
- 2 tablespoons tomato paste
- 2 tablespoons honey
- 1 tablespoon Worcestershire sauce
- 1 teaspoon ground coriander
- 1 teaspoon smoked paprika
- ½ teaspoon red pepper flakes, adjust to taste for desired level of spiciness
- Salt and black pepper to taste
- Fresh parsley for garnish
Instructions
- Season the flank steak with salt and black pepper on both sides.
- In a bowl, whisk together the soy sauce, beef broth, tomato paste, honey, Worcestershire sauce, ground cumin, smoked paprika, and red pepper flakes.
- Place the sliced onions and garlic cloves in the bottom of the slow cooker.
- Lay the seasoned flank steak on top of the onions and garlic.
- Pour the prepared sauce over the steak, ensuring that it is evenly coated.
- Cover the slow cooker and cook on low for 7-8 hours, or on high for 3-4 hours, until the steak is tender.
- Once cooked, carefully remove the steak from the slow cooker and transfer it to a cutting board. Let it rest for a few minutes.
- Slice the steak across the grain into thin strips.
- Serve the savory and spicy slow cooker flank steak over a bed of creamy mashed potatoes (if desired) spooning the flavorful sauce from the slow cooker over the steak.
- Garnish with fresh parsley for a pop of color and added freshness. Enjoy!
Nutrition
Nutrition info is auto-generated. This information is an estimate; if you are on a special diet, please use your own calculations.
More Slow Cooker Steak Recipes
- Vintage style Crockpot Swiss Steak and saucy Slow Cooker Salisbury Steak are both classic comfort food dishes with tender beef simmered in rich sauces. Try my newest recipe for Honey Garlic Steak Bites, which are amazing over rice.
- Cheesy Slow Cooker Italian Beef Sandwiches and EASY Crockpot Steak Burritos make hearty, flavorful meals packed with seasoned beef and melty cheese.
- Pepper and onion Slow Cooker Pepper Steak and Garlic Butter Crockpot Steak Bites are easy, savory options perfect for a family dinner or appetizer.
GREAT recipe. My neighbors even commented on how good it smelled while cookinh it
This is a great recipe! My boyfriend said I got him from his stomach.
So easy and delicious! I cooked on high for 4 hours and the meat was actually so tender that I was able to just pull it apart with 2 forks and serve it pulled. Will be adding this to my recipe arsenal 🙂