Name: Slow Cooker Pepper Steak Recipe
Prep time: 10 min
Cook time: PT-489669H19M19S
Total time: 6 h 10 min
Cuisine: Asian-Inspired
Ingredients: 2 lbs beef sirloin strips or sirloin steak, sliced; 3 large colorful bell peppers, sliced thick; 1 large onion, sliced; 3 garlic cloves, minced; 3/4 cup beef broth; 3 beef bouillon cubes; 1/4 cup soy sauce; 2 tsp Worcestershire sauce; 2 tbsp honey; 1 tsp ground ginger; 1/2 tsp black pepper; 1/2 tsp salt; 2 tbsp cornstarch or flour

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This Slow Cooker Pepper Steak recipe has quickly become one of my go-to meals. It’s incredibly simple, packed with flavor, and perfect for busy days when I want a comforting meal ready and waiting. The beef turns out tender and juicy, the peppers are perfectly cooked, and the savory sauce ties everything together beautifully.

Slow Cooker Pepper Steak Recipe

Why You’ll Love This Recipe

I love how hands-off this recipe is. I just toss everything into the slow cooker and let it do its magic while I go about my day. The combination of tender sirloin, colorful peppers, and rich, flavorful sauce makes this dish a family favorite. It’s also versatile—I serve it over rice, noodles, or even on its own when I’m watching my carbs.

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

2 lbs beef sirloin strips or sirloin steak cut into slices
3 large colorful bell peppers, sliced thick
1 large onion, sliced
3 garlic cloves
¾ cup beef broth
3 beef bouillon cubes
¼ cup soy sauce
2 teaspoon Worcestershire sauce
2 tablespoon honey
1 teaspoon ground ginger
½ teaspoon black pepper
½ teaspoon salt
2 tablespoon cornstarch or flour

Directions

I start by adding the beef strips, sliced peppers, and onion into the slow cooker.
Then, I mince the garlic and add it on top.
In a separate bowl, I whisk together the beef broth, soy sauce, Worcestershire sauce, honey, ground ginger, black pepper, and salt. I dissolve the bouillon cubes into this mixture before pouring it over the meat and vegetables.
I cover and cook on low for 6–7 hours or on high for 3–4 hours, until the beef is tender and the peppers are soft.
About 30 minutes before serving, I mix the cornstarch or flour with a bit of cold water to make a slurry. I stir it into the slow cooker to thicken the sauce.
I serve hot over rice, noodles, or enjoy it as-is.

Servings and timing

This recipe serves about 6 people. It takes around 10 minutes to prep and cooks for 6–7 hours on low or 3–4 hours on high. Perfect for setting up before heading out for the day.

Variations

When I want to switch things up, I sometimes use flank steak instead of sirloin. I’ve also added mushrooms or snow peas during the last hour of cooking for extra texture. For a spicy kick, I stir in a little crushed red pepper or sriracha sauce.

Storage/Reheating

I store leftovers in an airtight container in the fridge for up to 4 days. To reheat, I just microwave individual portions or warm them in a saucepan over medium heat until hot. If the sauce thickens too much in the fridge, I stir in a splash of water or broth while reheating.

FAQs

How do I keep the peppers from getting too soft?

I sometimes add the bell peppers halfway through cooking if I want them to retain more of their texture.

Can I use frozen beef strips?

Yes, but I always thaw them completely before adding to the slow cooker to ensure even cooking.

What can I use instead of cornstarch?

Flour is a good substitute, or I’ve even used arrowroot powder when I wanted a gluten-free option.

Is it okay to cook this on high the entire time?

Yes, I cook it on high for 3–4 hours when I need it ready faster. The beef still turns out tender.

Can I prepare this the night before?

Absolutely. I prep all the ingredients and store them in the fridge in the slow cooker insert, then just pop it into the cooker and start it in the morning.

Conclusion

This Slow Cooker Pepper Steak has everything I want in a weeknight dinner—flavorful, easy, and totally satisfying. Whether I’m heading out for the day or just don’t feel like spending hours in the kitchen, this recipe never lets me down. It’s a must-try for anyone who loves hearty, comforting meals with minimal effort.