Slow Cooker Flank Steak

5 from 3 votes

This recipe for Slow Cooker Flank Steak is a weeknight hero. It’s quick to prep, and then the slow cooker does the rest, leaving you with tender and flavorful steak and gravy.

Prep Time10

Cook Time6

Total Time6 10

Servings:

Calories: 339kcal

Author: Karin and Ken

Ingredients

1 2 pound flank steak
1 teaspoon garlic powder
1 teaspoon onion powder
1 teaspoon Italian seasoning blend
½ teaspoon salt
½ teaspoon pepper
2 tablespoons extra virgin olive oil
1 cup thinly sliced onion
3 cloves garlic
1 package au jus mix
1 cup beef broth
¼ cup unsalted butter

Optional

fresh parsley

Instructions

Prepare a 8 quart slow cooker with cooking spray.
Season the flank steak with garlic powder, onion powder, Italian seasoning, salt and pepper.
Heat oil in a large skillet over high heat and sear the seasoned flank steak on both sides.
Place the steak in the prepared slow cooker.
In a small bowl, soften the garlic and onions in the microwave for about 3 minutes then distribute them evenly around the flank steak.
In a second small bowl, whisk together the au jus mix and beef broth until well combined and pour over the steak, garlic and onions.
Place the butter on top of the steak.
Cover and cook on low for 6-8 hours or high for 3-4 hours.
Remove from the slow cooker and shred or slice. (The meat is more likely to shred as it will be super tender from cooking low and slow.)
Top with optional fresh parsley and serve.

Video

Notes

If the beef isn't melt-in-your-mouth tender yet, it just needs a little more time to break down—cover and cook for an additional 30 minutes.
Always slice cooked steak against the grain to cut through muscle fibers, ensuring a tender bite every time.
If the jus is too thin, simmer it in a small saucepan on the stovetop for a few minutes to quickly reduce and thicken the sauce.

Nutrition