Slow Cooker Copycat Panda Express Black Pepper Sirloin Steak

Total Time:20

Ingredients

2 pounds sirloin steak cut into thin bite-sized strips
1 teaspoon salt
1 teaspoon pepper
2 tablespoons cornstarch
1 tablespoon oil
1 red bell pepper chopped into chunks
1 small white onion diced
8 oz mushrooms sliced
2 cups broccoli florets
½ cup low sodium soy sauce
¼ cup beef broth
3 tablespoons brown sugar
2 tablespoons oyster sauce
1/2 tablespoon sesame oil
1 tablespoon minced garlic
1/2 teaspoon ground ginger
1½ tablespoons freshly cracked black pepper
1 tablespoon cornstarch
2 tablespoons water
Sliced green onions and sesame seeds for garnish

Instructions

Step 1: Season the Steak - Add the sliced sirloin steak to a large bowl, then sprinkle it with the salt and pepper. Use your hands or a pair of tongs to toss everything together so the seasoning gets on all sides of the beef. I always like starting with seasoned meat instead of relying only on the sauce, because it makes the whole dish taste deeper and more complete.
Step 2: Coat the Beef with Cornstarch - Sprinkle the 2 tablespoons of cornstarch over the steak and toss until the pieces are lightly coated. It may look a little dusty at first, and that is just fine. This step helps the steak brown better in the skillet and also helps create that glossy takeout style sauce later. It is one of those small steps that makes the finished dish taste more like something from a restaurant.
Step 3: Sear the Steak - Heat the oil in a large skillet over medium high heat. Add the steak in batches so the pan does not get crowded. Sear each batch for 1 to 2 minutes, just until the outside gets lightly browned. The steak does not need to cook through right now. You are just building flavor. I know it is tempting to skip this step, but that little bit of browning makes a real difference.
Step 4: Move Everything to the Slow Cooker - Transfer the browned steak to the slow cooker. Add the chopped red bell pepper and diced onion over the top. The bell pepper softens as it cooks and the onion melts into the sauce, giving the whole dish that cozy, savory smell that makes people peek under the lid even though you told them not to.
Step 5: Whisk the Black Pepper Sauce - In a bowl, whisk together the low sodium soy sauce, beef broth, brown sugar, oyster sauce, sesame oil, minced garlic, ground ginger, and freshly cracked black pepper. Whisk until the brown sugar is mostly dissolved and everything looks combined. This sauce should smell bold, savory, peppery, and just a little sweet. That is exactly what you want.
Step 6: Pour and Slow Cook - Pour the sauce evenly over the steak, bell pepper, and onion in the slow cooker. Cover and cook on low for 4 to 5 hours or on high for 2 to 3 hours, until the steak is tender. I prefer low when I have the time because it gives the beef a softer texture, but high works when dinner needs to move along.
Step 7: Add the Broccoli and Mushrooms - About 30 minutes before serving, stir in the broccoli florets and sliced mushrooms. Adding them later keeps the broccoli from getting too soft and helps the mushrooms keep some body. This is one of those dad rules I learned the hard way after making sad broccoli more than once. Late is better here.
Step 8: Thicken the Sauce - In a small bowl, whisk together the remaining 1 tablespoon cornstarch and 2 tablespoons water until smooth. Stir this slurry into the slow cooker gently, making sure it mixes into the sauce. Cover and cook on high for another 10 to 15 minutes, until the sauce thickens and turns glossy. When it coats the back of a spoon, you are in good shape.
Step 9: Garnish and Serve - Sprinkle the finished black pepper sirloin steak with sliced green onions and sesame seeds. Serve it warm over white rice or noodles, making sure to spoon plenty of sauce over the top. Around here, the sauce is not an afterthought. It is the reason the rice disappears first.

Notes

Substitutions

Flank steak: Use flank steak instead of sirloin for a lean, flavorful option.
Coconut aminos: Use coconut aminos instead of soy sauce if you want a slightly sweeter soy free option.
Green bell pepper: Add green bell pepper with the red bell pepper for extra color and flavor.
Chicken broth: Use chicken broth if that is what you have, though beef broth gives a richer taste.
Honey: Use honey instead of brown sugar for a slightly different sweetness.

Variations

Spicy version: Add chili garlic sauce or red pepper flakes if your table likes a little heat.
Extra veggie version: Add snap peas or carrots near the end for more crunch and color.
Garlic lover version: Double the garlic for a bolder, more aromatic sauce.
Takeout bowl version: Serve it with fried rice or lo mein noodles for a full restaurant style meal.
Lower carb version: Spoon it over cauliflower rice for a lighter dinner that still feels hearty.

Tips and Tricks

Use fresh cracked pepper: Fresh cracked black pepper gives the most authentic flavor and makes the sauce pop.
Do not overcook the broccoli: Add broccoli near the end so it stays vibrant and slightly crisp.
Sear the steak first: Browning the beef adds flavor and helps the texture feel more like takeout.
Use thicker oyster sauce: A good thick oyster sauce gives the finished dish a richer glossy coating.
Slice the steak thin: Thin strips cook more evenly and become tender faster in the slow cooker.
Stir gently at the end: The beef will be tender, so gentle stirring keeps everything looking nice.

Serving Ideas

White rice: Spoon the steak and sauce over fluffy white rice for the classic takeout feel.
Noodles: Serve it over lo mein noodles or simple cooked spaghetti tossed with a little sesame oil.
Fried rice: Pair it with fried rice when you want a bigger homemade takeout dinner.
Cauliflower rice: Use cauliflower rice for a lower carb plate that still catches the sauce.
Steamed vegetables: Add extra steamed vegetables on the side for a colorful family meal.

Storage and Make Ahead Tips

Refrigerate leftovers: Store leftovers in an airtight container in the refrigerator for up to 3 days.
Reheat gently: Warm leftovers in a skillet or microwave until heated through, adding a splash of broth if needed.
Freeze for later: Freeze cooled leftovers for up to 2 months in a freezer safe container.
Thaw overnight: Thaw frozen leftovers in the refrigerator overnight before reheating.
Prep ahead: Slice the steak and chop the vegetables earlier in the day so dinner comes together quickly.

Servings: 6 servings