Slow Cooker Pepper Steak is a delightful and easy-to-make dish that brings together the rich flavors of beef sirloin and vibrant bell peppers. Perfect for busy days, this recipe allows you to enjoy a hearty meal with minimal effort, thanks to the convenience of a slow cooker.
While most of the ingredients for this recipe are common pantry staples, you might need to pick up beef sirloin if it's not something you usually have on hand. Additionally, worcestershire sauce is a key ingredient that adds depth to the dish, so make sure to grab a bottle if you don't already have it.

Ingredients For Slow Cooker Pepper Steak Recipe
Beef sirloin: This cut of beef is tender and flavorful, perfect for slow cooking.
Beef broth: Adds a rich, savory base to the dish.
Soy sauce: Provides a salty, umami flavor that enhances the beef.
Worcestershire sauce: Adds a tangy, slightly sweet depth to the sauce.
Garlic powder: Infuses the dish with a subtle garlic flavor.
Black pepper: Adds a bit of heat and enhances the overall flavor.
Onion: Adds sweetness and texture to the dish.
Bell peppers: Provide color, crunch, and a mild sweetness.
Cornstarch: Used to thicken the sauce, ensuring it coats the beef and vegetables nicely.
Technique Tip for This Recipe
To enhance the flavor of your beef sirloin, consider searing the strips in a hot pan for a few minutes before placing them in the slow cooker. This step will caramelize the exterior, adding a deeper, richer taste to your pepper steak.
Suggested Side Dishes
Alternative Ingredients
beef sirloin - Substitute with chicken breast: Chicken breast is a lean protein that can absorb the flavors well and cooks tender in a slow cooker.
beef broth - Substitute with vegetable broth: Vegetable broth provides a similar depth of flavor and is a good option for a lighter or vegetarian version.
soy sauce - Substitute with tamari: Tamari is a gluten-free alternative to soy sauce and has a similar umami flavor.
worcestershire sauce - Substitute with balsamic vinegar: Balsamic vinegar adds a tangy and slightly sweet flavor that can mimic the complexity of Worcestershire sauce.
garlic powder - Substitute with fresh garlic: Fresh garlic provides a more robust and aromatic flavor compared to garlic powder.
black pepper - Substitute with white pepper: White pepper has a milder flavor and can be used if you prefer a less pungent taste.
large onion - Substitute with shallots: Shallots have a milder and sweeter flavor, which can add a subtle complexity to the dish.
bell peppers - Substitute with poblano peppers: Poblano peppers offer a slightly smoky flavor and a bit of heat, adding a different dimension to the dish.
cornstarch - Substitute with arrowroot powder: Arrowroot powder is a great thickening agent and works similarly to cornstarch, making it a good alternative.
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How to Store or Freeze This Dish
Allow the pepper steak to cool completely before storing. This helps prevent condensation, which can make the dish soggy.
Transfer the cooled pepper steak into airtight containers or heavy-duty freezer bags. If using bags, squeeze out as much air as possible to prevent freezer burn.
Label the containers or bags with the date and contents. This ensures you know what it is and when it was stored, helping you keep track of freshness.
Store the pepper steak in the refrigerator for up to 3-4 days. For longer storage, place it in the freezer, where it can last up to 2-3 months.
When ready to reheat, if frozen, thaw the pepper steak in the refrigerator overnight. This gradual thawing helps maintain the texture and flavor.
Reheat the pepper steak on the stovetop over medium heat, stirring occasionally until heated through. You can also reheat it in the microwave, using a microwave-safe dish and covering it with a microwave-safe lid or plastic wrap to retain moisture.
If the sauce has thickened too much during storage, add a splash of beef broth or water while reheating to achieve the desired consistency.
For best results, avoid reheating the pepper steak multiple times. Instead, reheat only the portion you plan to consume to maintain the quality and flavor of the dish.
Best Tools for This Recipe
Slow cooker: This is the main appliance used to cook the pepper steak slowly over several hours, ensuring the beef becomes tender and flavorful.
Cutting board: Essential for safely slicing the beef sirloin, onion, and bell peppers.
Sharp knife: Necessary for cutting the beef into strips and slicing the vegetables.
Mixing bowl: Used to combine the beef broth, soy sauce, Worcestershire sauce, garlic powder, and black pepper before pouring over the beef.
Measuring cups: Needed to measure out the beef broth and soy sauce accurately.
Measuring spoons: Used to measure the Worcestershire sauce, garlic powder, and black pepper.
Small bowl: For mixing the cornstarch with water to create a slurry that will thicken the sauce.
Wooden spoon: Useful for stirring the cornstarch mixture into the slow cooker.
Tongs: Handy for placing the beef strips into the slow cooker and for serving the finished dish.
How to Save Time on Making This Recipe
Pre-cut ingredients: Slice the beef sirloin, onion, and bell peppers the night before to save time in the morning.
Use pre-made broth: Opt for store-bought beef broth to avoid the hassle of making it from scratch.
Quick mix sauces: Combine soy sauce, worcestershire sauce, garlic powder, and black pepper in a jar the night before for a quick pour in the morning.
Cornstarch prep: Pre-mix the cornstarch and water slurry and store it in the fridge until needed.

Slow Cooker Pepper Steak Recipe
Ingredients
Main Ingredients
- 1 lb Beef sirloin, cut into strips
- 1 cup Beef broth
- ¼ cup Soy sauce
- 1 tablespoon Worcestershire sauce
- 1 teaspoon Garlic powder
- 1 teaspoon Black pepper
- 1 Large onion, sliced
- 2 Bell peppers, sliced
- 2 tablespoon Cornstarch mixed with 2 tablespoon water
Instructions
- 1. Place beef strips in the slow cooker.
- 2. In a bowl, combine beef broth, soy sauce, Worcestershire sauce, garlic powder, and black pepper. Pour over beef.
- 3. Add sliced onion and bell peppers on top.
- 4. Cover and cook on low for 6-8 hours or until beef is tender.
- 5. About 30 minutes before serving, mix cornstarch with water and stir into the slow cooker. Cook until sauce has thickened.
Nutritional Value
Keywords
Suggested Appetizers and Desserts
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