Slow Cooker Pepper Steak
This Slow Cooker Pepper Steak is an easy way to turn flank steak and colorful bell peppers into a tender, saucy dinner. The beef cooks low and slow with onions, garlic, ginger, soy sauce, and beef broth, giving you plenty of savory sauce to spoon over rice or noodles. You can adjust the sweetness, spice, and vegetables to fit what your family likes.
Flank steak works very well because it becomes tender during slow cooking. Round steak, sirloin, skirt steak, chuck roast, and pre-cut beef stew meat can also be used.
Add the bell peppers during the second half of the cooking time if you prefer them more crisp. Adding them at the beginning will give you softer peppers.
Yes. Try adding broccoli, carrots, zucchini, mushrooms, or green beans.
Refrigerator: Refrigerate leftovers in a sealed container for 3 or 4 days.
Reheating: Reheat on the stovetop over medium heat until heated through, adding a splash of broth if the sauce has tightened up.
Freezer: Freeze in a sealed container for up to 2 months. The beef and sauce freeze well, though the peppers come out noticeably softer, so thaw overnight in the fridge before reheating.
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Ingredient Notes
- Flank steak: Slice the beef into thin strips so it cooks evenly and becomes tender in the slow cooker.
- Bell peppers: I use green, red, and yellow peppers for a mix of color and flavor, but any combination will work.
- Onion: Slice it thick so it holds up better during the longer cooking time.
- Garlic and ginger: These add flavor to the sauce as everything cooks together.
- Beef broth: Forms the base of the pepper steak sauce.
- Soy sauce: Adds a salty, savory flavor to the beef and vegetables.
- Cornstarch: Helps thicken the sauce as it cooks.
- White sugar: A small amount balances the salty soy sauce. You can adjust it to taste.
- Red pepper flakes: Add a little heat without making the dish overly spicy.
- Salt and pepper: Season to taste.
- Green onions and sesame seeds: Add these just before serving.
Slow Cooker Pepper Steak
- Place the sliced flank steak into a 6-quart slow cooker.
- Top with the sliced bell peppers, onion, garlic, and ginger.
- In a bowl, combine the beef broth, soy sauce, cornstarch, sugar, red pepper flakes, salt, and pepper. Pour evenly over the beef and vegetables.
- Cover and cook on low for 5-7 hours or high for 2 ½-3 ½ hours.
- Stir well before serving. Top with sliced green onions and sesame seeds and serve over rice or noodles.
More Slow Cooker Beef Recipes we Love!
- Beef Tips and Peppers
- Easy Crockpot Beef Tips with Gravy
- Slow Cooker Asian Beef Ramen Noodles
- Slow Cooker Mongolian Meatballs
- Slow Cooker Mississippi Steak Bites
Slow Cooker Pepper Steak
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Equipment
Ingredients
- 2 lbs flank steak sliced into thin strips
- 1 large green bell pepper sliced thick
- 1 large red bell pepper sliced thick
- 1 large yellow bell pepper sliced thick
- 1 large onion sliced thick
- 4 cloves garlic cloves minced
- 1 teaspoon ginger peeled and minced
- 1 cup beef broth
- ¼ cup soy sauce
- 2 tablespoons cornstarch
- 2 teaspoons white sugar or to taste
- ½ teaspoon red pepper flakes
- Salt and pepper to taste
- Fresh green onions for topping
- Sesame seeds for topping
Instructions
- Place the sliced flank steak into a 6-quart Crockpot.
- Top with the sliced bell peppers, onion, garlic, and ginger.
- In a bowl, combine the beef broth, soy sauce, cornstarch, sugar, red pepper flakes, salt, and pepper. Pour evenly over the beef and vegetables.
- Cover and cook on low for 5-7 hours or high for 2 ½-3 ½ hours.
- Stir well before serving. Top with sliced green onions and sesame seeds and serve over rice or noodles.
Notes
What to Serve With Slow Cooker Pepper Steak
- Steamed white or jasmine rice
- Lo mein or plain buttered egg noodles
- A quick cucumber salad for something cool and crunchy alongside
Nutrition
Nutritional Disclaimer: Family Fresh Meals is not a dietician or nutritionist, and any nutritional information shared is only an estimate. We recommend running the ingredients through an online nutritional calculator if you need to verify any information.
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