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A plate of Slow Cooker Pepper Steak with shredded beef, green and red bell peppers, and savory sauce sits on a striped placemat. A fork, onion, fresh bell peppers, and a slow cooker are nearby.

Easy Slow Cooker Pepper Steak

This Slow Cooker Pepper Steak recipe is flavorful, simple to prep, and perfect for busy nights with juicy beef and colorful peppers.

Course Dinner
Cuisine Chinese
Keyword crockpot pepper steak recipe, pepper steak recipe, slow cooker pepper steak
Prep Time 5 minutes
Cook Time 8 hours
Total Time 8 hours 5 minutes
Servings 4
Author momma lew

Ingredients

  • 2 to 3 pounds sirloin steak
  • 1 tablespoon olive oil
  • Salt and black pepper to taste
  • ¼ cup cold water
  • ½ teaspoon garlic powder
  • 1 14.5 ounce can petite diced tomatoes
  • 3 tablespoons soy sauce
  • 2 beef bouillon cubes
  • 1 tablespoon white wine vinegar
  • 1 green bell pepper seeded and cut into 1-inch pieces
  • 1 red bell pepper seeded and cut into 1-inch pieces
  • 1 small onion halved and cut into thick slices
  • 2 tablespoons cornstarch and 1 tablespoon water mixed together to act as a sauce thickener

Instructions

  1. Spray slow cooker with nonstick cooking spray.
  2. Season both sides of the steak with salt and black pepper as desired.
  3. Heat a heavy large skillet over medium heat until the skillet is hot. Add the oil and then the steak. Brown beef on both sides but do not cook through.
  4. Transfer the steak to the slow cooker liner.
  5. Mix bouillon cube in hot water and deglaze the bottom of the skillet with the stock, scraping to remove any cooked on pieces.
  6. Pour the liquid over the steak in the slow cooker.
  7. Add red and green peppers, stewed tomatoes to the beef mixture.
  8. Combine cornstarch, water, garlic powder, soy sauce and vinegar in a small bowl. Pour over the steak.
  9. Season with salt and black pepper, if desired.
  10. Cover the slow cooker and cook crock pot pepper steak on high for 3 to 4 hours or low for 6 to 8 hours.