When I want a slow cooker dinner that feels a little more special than the usual dump-and-go meal, this Crockpot Pepper Steak Recipe is one I come back to. Thin strips of beef cook in a savory sauce with garlic, ginger, soy sauce, Worcestershire, tomatoes, onions, and bell peppers until the meat is tender and the sauce is glossy enough to spoon over rice.
The part I like most is that the peppers go in near the end. They keep more of their color and bite instead of disappearing into the sauce, while the beef gets the long, slow cooking time it needs. It is an easy family dinner, but it still has that takeout-style sweet-and-savory flavor that makes everyone want extra sauce.
Why You’ll Love This Slow Cooker Pepper Steak
It is mostly hands-off. Once the beef and sauce are in the slow cooker, dinner can cook while you get on with the rest of the day.
The sauce is built for rice or noodles. Beef broth, soy sauce, Worcestershire, brown sugar, tomatoes, garlic, and ginger cook down into a rich sauce, then a quick cornstarch slurry gives it that thicker pepper-steak finish.
You can adjust the texture. Add the peppers during the last 45 minutes for a firmer bite, or earlier if your family prefers very soft peppers. The same flexibility works with the beef, too, since sirloin, round steak, flank steak, and stew meat can all work here.
If slow cooker dinners are your kind of weeknight cooking, save my 15 Dump-and-Go Crockpot Meals for the next time you want more easy ideas.
Ingredients You’ll Need
Beef
Use 2 pounds of beef sirloin, round steak, or flank steak, sliced into thin strips. Sirloin is my first choice when I want the most tender result, but round steak is a good budget-friendly option for slow cooking. If you use flank steak, slice it against the grain.
Bell Peppers and Onion
Green and red bell peppers give this dish its classic color and flavor, while a large sliced onion cooks down into the sauce. A yellow or orange bell pepper is optional, but it is an easy way to make the finished dish look brighter.
The Savory Sauce
The sauce starts with beef broth, low-sodium soy sauce, Worcestershire sauce, garlic, brown sugar, ground ginger, black pepper, and diced tomatoes. I prefer low-sodium soy sauce because the flavors concentrate as the slow cooker runs, and it is much easier to add salt at the end than fix an overly salty sauce.
Cornstarch Slurry
Cornstarch mixed with cold water goes in during the final part of cooking. This is what turns the cooking liquid into a thicker sauce that clings to the beef and peppers instead of running straight through the rice.
What Is the Best Beef for Crockpot Pepper Steak?
For the most reliable texture, I like sirloin because it stays tender without needing an extremely long cook. Round steak is less expensive and benefits from the slow cooker, while flank steak works well when it is sliced thinly against the grain.
You can also use stew meat if that is what you already have. The finished pieces will be chunkier than classic pepper steak strips, but the flavor still works. Whatever cut you choose, keep the pieces fairly even so they finish at about the same time.
How to Make Crockpot Pepper Steak
1. Prep the Beef
Slice the beef into thin strips. Browning it in a little olive oil first is optional, but I do it when I have a few extra minutes because the browned edges add more savory flavor to the finished sauce.
2. Add the Sauce Ingredients
Place the beef in the crockpot, then add the onion, garlic, beef broth, soy sauce, Worcestershire sauce, brown sugar, ginger, black pepper, optional red pepper flakes, and diced tomatoes. Stir just enough to coat the beef.
3. Slow Cook Until Tender
Cover and cook on LOW for 6 to 7 hours or on HIGH for 3 to 4 hours. I prefer LOW when possible because the beef tends to cook more gently. Add the sliced bell peppers about 45 minutes before serving so they soften without turning mushy.
4. Thicken the Sauce
Whisk the cornstarch and cold water until smooth, then stir the slurry into the slow cooker during the final 20 to 30 minutes. Give the sauce a little time to thicken before serving.
Tips for Tender Beef and Better Sauce
Slice against the grain. This matters most with flank steak and round steak. Shorter muscle fibers make each bite feel more tender.
Do not add the peppers too early. Six hours in a slow cooker can take all the texture out of bell peppers. Forty-five minutes near the end is a better starting point.
Keep the slurry cold. Cornstarch mixes more smoothly with cold water. If you stir dry cornstarch straight into the hot slow cooker, it is much more likely to clump.
Taste before adding extra salt. Soy sauce, broth, and Worcestershire all bring salt, so I wait until the end before deciding whether the dish needs more.
What to Serve with Crockpot Pepper Steak
Steamed white rice is the classic choice because it catches every bit of the sauce. Brown rice, egg noodles, mashed potatoes, or cauliflower rice also work well. For something green on the side, keep it simple with broccoli, green beans, or a crisp salad.
If you are in the mood for another saucy beef dinner later in the week, my Mongolian Ground Beef Noodles use a similar sweet-savory flavor profile but come together much faster on the stovetop.
Easy Variations
For more heat, add extra red pepper flakes or a spoonful of chili garlic sauce. For a slightly sweeter sauce, add another tablespoon of brown sugar. Mushrooms are a natural addition if you want more vegetables, and snap peas can go in near the end with the peppers.
If you want a more classic American comfort-food direction, keep the tomatoes, beef broth, peppers, onions, and Worcestershire front and center. If you want it closer to a takeout-style bowl, finish with sliced green onions and a tiny drizzle of sesame oil just before serving.
Crockpot Pepper Steak FAQs
Can I put the beef in the slow cooker without browning it first?
Yes. Browning is optional. The recipe will still cook properly without that step, but searing the beef first adds extra browned flavor to the sauce.
Why is my pepper steak tough?
The most common reasons are the cut of beef, slicing with the grain instead of against it, or not giving a tougher cut enough time to soften. If you are using round steak or stew meat, cook until the beef is genuinely fork-tender rather than stopping only because the clock says the time is up.
When should bell peppers go into the crockpot?
For peppers that still have some shape and color, add them during the last 45 minutes. Add them earlier if you prefer very soft peppers.
Can I use stew meat instead of steak?
Yes. Stew meat works well in a slow cooker, although the pieces are usually thicker and more irregular than traditional pepper steak strips. Give it enough time to become tender.
How can I make the sauce thicker?
Mix another teaspoon of cornstarch with an equal amount of cold water, stir it into the hot sauce, and let it cook a little longer. Add extra thickener gradually so the sauce stays silky rather than turning gummy.
More Easy Beef Dinners
For another cozy beef dinner, try my Salisbury Steak Casserole with Mashed Potatoes. You can also browse the full Beef Recipes collection when you need more weeknight ideas.
Crockpot Pepper Steak Recipe
Ingredients
- 2 pounds beef sirloin round steak, or flank steak, sliced thin
- 2 tablespoons olive oil optional
- 1 green bell pepper sliced
- 1 red bell pepper sliced
- 1 yellow bell pepper sliced, optional
- 1 large onion sliced
- 3 cloves garlic minced
- 1 cup beef broth
- 1/3 cup low-sodium soy sauce
- 1 tablespoon Worcestershire sauce
- 1 tablespoon brown sugar
- 1 teaspoon ground ginger
- 1/2 teaspoon black pepper
- 1/4 teaspoon red pepper flakes optional
- 1 can diced tomatoes 14.5 ounces, undrained
- 2 tablespoons cornstarch
- 2 tablespoons cold water
- Cooked rice or noodles for serving
Instructions
- Slice the beef into thin strips. For extra flavor, brown the beef in a skillet with olive oil for 2 to 3 minutes per side.
- Add the beef to the crockpot.
- Add onion, garlic, beef broth, soy sauce, Worcestershire sauce, brown sugar, ginger, black pepper, red pepper flakes, and diced tomatoes. Stir gently.
- Cover and cook on low for 6 to 7 hours or on high for 3 to 4 hours, until the beef is tender.
- Add the sliced bell peppers during the last 45 minutes of cooking.
- Mix cornstarch and cold water in a small bowl until smooth. Stir into the crockpot during the last 20 to 30 minutes to thicken the sauce.
- Serve hot over rice, noodles, or mashed potatoes. Garnish if desired.
