This post may contain affiliate links. Please read our disclosure policy.
Pepper steak is a Chinese-inspired meal with plenty of sauce, bell peppers, and onions. This is a stir-fry-style meal but made in the slow cooker! Wonderful served over rice and has plenty of sauce (or gravy) to go around.
If you like Chinese-flavored meals, try my Slow Cooker Chicken and Broccoli and Slow Cooker Sweet and Sour Chicken.

Why this pepper steak recipe works
This recipe is easy but has so much flavor and tastes like a restaurant-style meal but made in your own kitchen. The sauce has quite a few ingredients, but all are pantry staples and easy to assemble.
The slow cooking tenderizes the beef way more than cooking on the stovetop, and the sauce marries together during the long cooking time. We also like to make slow cooker swiss steak, slow cooker flank steak, or slow cooker beef and broccoli.
Recipe Ingredients

- Beef – cut top sirloin or round steaks into 1/2 inch strips (some stores carry this already done for you and call it stir fry beef). Flank steak works but the beef will have a more stringy texture. We also love to make Slow Cooker London Broil!
- Bell peppers – one red and one green
- White onion – sliced, though you can mince it if you have guests who don’t like big chunks of onions.
- Water and beef bouillon cubes – mix hot water and bouillon cubes to start the base of the sauce.
- Brown sugar – honey or white sugar works, too.
- Soy sauce – I use standard soy sauce in this recipe, not low sodium. Note that there is no table salt in this recipe so using regular soy sauce is important.
- Worcestershire sauce – adds a touch of tang and layer of flavor to the sauce.
- Cornstarch – this helps make the sauce thick and velvety.
- Seasonings – ground ginger, garlic powder, black pepper and brown sugar
- Red pepper flakes – This is optional if you like a spicy dish. (Find the full recipe in the recipe card below the photos).
Step-by-Step Directions

Step One – In a small bowl, add the water and beef bouillon cubes. Microwave until hot, about 30 seconds.
Step Two – Dissolve the beef bouillon into the water, do this by squishing the cubes with the back of a spoon.
Step Three – Add the soy sauce, Worcestershire sauce, brown sugar, seasonings, and cornstarch. (Add red pepper flakes if you want your sauce spicy).
Step Four – Whisk these ingredients until smooth. This may not seem like a lot of sauce, but the beef, onion, and peppers will create more sauce while cooking.

Step Five – Add the sauce mixture to the slow cooker.
Step Six – Add the beef strips on top of the sauce.
Step Seven – Next, add the onions.
Step Eight – Then add the bell pepper strips.

How to Serve
So many different ways to serve pepper steak. Choose what your family enjoys most.
- White rice is the perfect side dish. It soaks up the flavors of the sauce and fills the entire family. You can also use brown rice.
- Spaghetti noodles or egg noodles
- Steamed veggies such as broccoli or green beans.
- Quinoa is a healthy option!

Recipe FAQs
Yes, add the raw beef, onion, and peppers to a freezer ziplock bag. Mix up the sauce mixture, though let it cool before adding to the bag. Freeze for up to 3 months. Thaw in the fridge when ready to use, then add contents to the slow cooker and cook.
You can add 1 cup of sliced mushrooms to pepper steak, though the sauce may be a little watery due to the mushrooms’ moisture content.
You can if you are in a pinch. Though I use bouillon cubes and a small amount of water, so the sauce is potent. The meat and vegetables will let off their own moisture and dilute the concentrated sauce.
To store pepper steak, add to Tupperware and refrigerate for up to 3 days. To freeze this crockpot pepper steak recipe, add to freezer Ziplock bags and squeeze out any excess air. Freeze for up to 3 months.

Featured Comment
“Made exactly as written. Was a complete hit with my family. The best pepper steak I have ever made & that is a lot as it is my son’s favorite dish. Will use this recipe from now on. Easy to make. Thanks.”
– sherry

Slow Cooker Pepper Steak
How to Video
Equipment
Ingredients
- 2 lbs. beef strips, Look for beef cut into strips already or buy top sirloin and cut into 1/2 inch strips (round steak works well too).
- 1 green bell pepper, sliced thick
- 1 red bell pepper, sliced thick
- 1 white onion, sliced
For the sauce:
- ½ cup water,
- 2 beef bouillon cubes
- 3 Tbsp. soy sauce
- 1 tsp. Worcestershire sauce
- ¼ tsp. ground ginger
- ¼ tsp. garlic powder
- ½ tsp. black pepper
- 2 tsp. brown sugar, honey or white sugar works too
- 1 Tbsp. cornstarch
- ¼ tsp. red pepper flakes, (optional)
Instructions
- In a small microwavable bowl add the water and the beef bouillon cubes. Place in the microwave for 30 seconds, mix until dissolved. I use the back of a spoon or the tip of a whisk to break up the bouillon cubes. (If you don't have a microwave, boil your water on the stove-top).
- Add the soy sauce, Worchestershire sauce, ginger, garlic powder, pepper, brown sugar and cornstarch to the bowl with the water and bouillon. Whisk until smooth. (Add the red pepper flakes if you desire). Pour this mixture into the slow cooker.
- Add the beef, bell peppers and onions onto the sauce in the slow cooker.
- Cover and cook on LOW for 5 hours.
Sarah’s Notes
Nutrition
Nutrition info is auto-generated. This information is an estimate; if you are on a special diet, please use your own calculations.
More popular slow cooker recipes
Our Favorite Sweet Chili Chicken and Slow Cooker Hawaiian Chicken bring a sweet and tangy kick that’s perfect served over rice.
For something hearty and savory, Slow Cooker Beef Tips and Slow Cooker Ropa Vieja are rich, comforting options that pair well with mashed potatoes or rice.
If you’re craving bold, saucy flavors, Slow Cooker Chicken Adobo and Slow Cooker Beef Chow Mein are easy, flavorful meals with a ton of personality.

















Could this be converted to a Instant Pot Pressure Cooker ? If so, how would you suggest converting it?
Sarah could you use beef broth instead of the water
Yes! The last 3 times I have made this I forgot to buy beef broth and so it has been the bouillon for me.
I use brown gravy mix and not the bullion although one may be added. I prefer to brown the beef prior to adding all other ingredients.
great tips Wayne. I will have to try it your way next time.
Could I use chicken instead? Any changes to the ingredients besides chicken bouillon cubes?
I don’t see why not. That actually sounds really good! I don’t think you need to do any changes besides the bouillon cubes. You can test the flavor of the sauce before you add the chicken, you may want to add your own touch.
This was so good! Next time I will cut back on the black pepper just a bit. It’s now a new family favorite!
I’m happy to hear that Kimberly!
Tried this recipe yesterday….AMAZING! …..and oh so easy to make
So great to hear Olga!
could this be done as a freezer meal?
Great flavor! I ended up doubling the liquid…hubby likes extra liquid. It was fabulous!
So lovely to have a recipe for Pepper Steak I can make in the slow cooker. This looks so delicious, Sarah!
Perfect comfort dish for fall!