This Crock Pot Beef Flank Steak recipe is tender and flavorful, which uses a savory-sweet balsamic marinade for rich taste. It’s a no-fuss take on steak, ready in about 6 hours and 5 minutes.
Crock Pot Beef Flank Steak Ingredients
- 1.5–2 pounds flank steak
- ⅓ cup balsamic vinegar
- ¼ cup olive oil
- 2 tablespoons honey
- 1 tablespoon Worcestershire sauce
- 1 tablespoon Dijon mustard
- 1 teaspoon garlic, minced
- ½ teaspoon kosher salt
- ½ teaspoon ground black pepper
How To Make Crock Pot Beef Flank Steak
- Mix the marinade: In a small bowl, combine balsamic vinegar, olive oil, honey, Worcestershire sauce, Dijon mustard, garlic, salt, and pepper.
- Add steak to slow cooker: Place flank steak in the slow cooker, pour marinade over it, and flip steak once or twice to coat.
- Cook until tender: Cover and cook on Low for 6 hours or on High for 3–4 hours, without adding water.
- Rest and slice: Transfer steak to a cutting board, let it rest for 10 minutes, then slice against the grain before serving.

Recipe Tips
- Best texture: Cooking on Low for 6 hours yields the most tender results.
- Flip for even flavor: Turn the steak in the marinade once or twice during cooking.
- No water needed: The marinade provides enough liquid for slow cooking.
- Slicing tip: Always cut against the grain to keep the meat tender.
- Reheating: Warm slowly on the stove with a splash of liquid, or microwave at 50% power in short bursts.
What To Serve With Crock Pot Beef Flank Steak
This juicy steak pairs well with:
- Garlic mashed potatoes
- Roasted asparagus
- Steamed green beans
- Rice pilaf
- Side salad with vinaigrette
How To Store Crock Pot Beef Flank Steak
- Refrigerate: Store in an airtight container in the fridge for 3–4 days.
- Freeze: Keep in a freezer-safe container for up to 2 months. Thaw overnight before reheating.
Beef Flank Steak Nutrition Facts
- Calories: 617
- Carbohydrates: 14g
- Protein: 63g
- Fat: 33g
- Saturated Fat: 9g
- Cholesterol: 179mg
- Sodium: 433mg
- Sugar: 12g
Nutrition information is estimated and may vary based on ingredients and cooking methods used.
FAQs
Can I use skirt steak instead of flank steak?
Yes, skirt steak works, but it may cook a little faster—start checking for tenderness earlier.
Do I need to marinate overnight?
No, the steak marinates while cooking in the slow cooker.
Can I sear the steak first?
Yes, browning the steak in a skillet before slow cooking adds extra flavor.
Try More Recipes:
Crock Pot Beef Flank Steak
Course: DinnerCuisine: AmericanDifficulty: Easy4
servings5
minutes6
hours617
kcalTender flank steak slow-cooked in a savory-sweet balsamic marinade for a juicy, flavorful dinner.
Ingredients
1.5–2 lb flank steak
⅓ cup balsamic vinegar
¼ cup olive oil
2 tbsp honey
1 tbsp Worcestershire sauce
1 tbsp Dijon mustard
1 tsp garlic, minced
½ tsp kosher salt
½ tsp black pepper
Directions
- Mix marinade ingredients in a small bowl.
- Place steak in slow cooker, pour marinade over it, and flip to coat.
- Cook on Low for 6 hours or High for 3–4 hours.
- Rest 10 minutes, slice against the grain, and serve.
