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Slow-Cooked Flank Steak Recipe

"My slow cooker gets lots of use, especially during the hectic summer months," notes Michelle Armistead from Keyport, New Jersey. "I can fix this flank steak in the morning and forget about it until dinnertime. I serve it with noodles and a tossed salad."
TOTAL TIME: Prep: 15 min. Cook: 7 hours YIELD:4-6 servings


  • 1 flank steak (about 1-1/2 pounds), cut in half
  • 1 tablespoon vegetable oil
  • 1 large onion, sliced
  • 1/3 cup water
  • 1 can (4 ounces) chopped green chilies
  • 2 tablespoons vinegar
  • 1-1/4 teaspoons chili powder
  • 1 teaspoon garlic powder
  • 1/2 teaspoon sugar
  • 1/2 teaspoon salt
  • 1/8 teaspoon pepper


  • 1. In a skillet, brown steak in oil; transfer to a 5-qt. slow cooker. In the same skillet, saute onion for 1 minute. Gradually add water, stirring to loosen browned bits from pan. Add remaining ingredients; bring to a boil. Pour over the flank steak. Cover and cook on low for 7-8 hours or until the meat is tender. Slice the meat; serve with onion and pan juices. Yield: 4-6 servings.

Nutritional Facts

4 ounce-weight: 199 calories, 11g fat (4g saturated fat), 48mg cholesterol, 327mg sodium, 4g carbohydrate (2g sugars, 1g fiber), 20g protein.

Reviews for Slow-Cooked Flank Steak

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Pianoplayer500 User ID: 8605115 239064
Reviewed Dec. 9, 2015

"We all love this!!!! We can't find flank steak but have used chuck roast instead. It is now one of our favorite meals."

MyrnaEva User ID: 8286858 222464
Reviewed Mar. 10, 2015

"I love this recipe. My family was happily surprised of how tender and juicy the flank steak was. I've added this one to my recipe box . It'll be a regular in our dinner menun."

Thehudelsons User ID: 7875702 26271
Reviewed Jul. 3, 2014

"This was great, BUT, added a lot to it. Started with sealing the meat with salt, pepper, garlic sale, pepper before cooking, browned. Then added onions, garlic, & browned. Added water, red wine, & light on other seasoning. When put into crock pot, as cooking, added, red pepper flakes, honey, honey BBQ sauce, garlic powder, hot paprika seasoning, Cajun seasoning, more salt & pepper as needed, balsamic vinegar, it was over the top delicious, served with scallop potatoes, but with all the sauce left, will do garlic mashed potatoes next time!!"

txmomtomany User ID: 7278772 202540
Reviewed May. 26, 2013

"Loved this. We're are a family of 7 and did double flank steak portions and it turned out perfect. Nothing leftover!"

cmkarkos User ID: 1066760 20933
Reviewed Sep. 27, 2011

"I thought I'd add to my previous comments, that I ALWAYS cook two flank steaks at the same time...(Yes stacked in the the same crock-pot). Sometimes I double the spices and onion, sometimes I don't...but BOTH always turn out perfect!"

Scrubbybubbles User ID: 3950880 16430
Reviewed Feb. 14, 2011

"It was ok.... Seemed to be missing something.. couldnt figure out what it was. Husband said it was spicy.. but missing flavor"

kaneshige1 User ID: 4665777 23172
Reviewed Aug. 9, 2010

"I wanted to add something else to my comment. I did cook the steak for 7 hours and I did find it a bit dry. I then tried 4-5 on high and it was fantastic."

kaneshige1 User ID: 4665777 16429
Reviewed Mar. 21, 2010

"This recipe was fantastic! I rarely eat beef, but this has been something I have made at least 3 times since I tired it 1 month ago."

eteaff User ID: 3482271 16428
Reviewed Aug. 4, 2009

"This is the best steak recipe I have ever tried. We liked it so much we made it twice in one week. Kudo's to the person who sent in the recipe."

cmkarkos User ID: 1066760 21722
Reviewed May. 1, 2008 Edited Sep. 27, 2011

"7 -8 hours yeiled a very dry and over done steak! We prefer ours done 4 hours on low. Turns out PERFECT!"

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Wine Pairings

Full-Bodied Red Wine

Enjoy this recipe with a full-bodied red wine such as Cabernet Sauvignon, Merlot or Syrah.