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Slow Cooker Pepper Steak
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Slow Cooker Pepper Steak That Will Blow Your Mind

Discover amouthwatering slow cooker Pepper Steak recipe that's easy, tender, and packedwith bold flavors—perfect for effortless weeknight dinners!
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Prep Time 15 minutes
Cook Time 5 hours
Total Time 5 hours 15 minutes
Course: Dinner
Cuisine: American-Chinese Fusion
Calories: 350
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 1.5 to 2 pounds flank steak – sliced into thin strips; you can also use sirloin or top round for a leaner option
  • 2 bell peppers – any color works but red and green add a nice flavor balance
  • 1 medium onion – sliced thin; yellow or white both work well
  • 2 cloves garlic – minced for that deep savory base
For the Sauce
  • 1/3 cup low-sodium soy sauce – gives that umami-rich base without overpowering saltiness
  • 1/4 cup beef broth – adds depth and keeps everything moist while cooking
  • 1 tablespoon brown sugar – a hint of sweetness to balance the savory notes
  • 1 tablespoon cornstarch – helps thicken the sauce into that glossy silky texture
  • 1 tablespoon olive oil – optional but great if you’re browning the beef before slow cooking
Optional Add-Ins
  • Crushed red pepper flakes – for a touch of heat
  • 1 tablespoon hoisin sauce – adds extra richness and depth
  • 1 teaspoon ginger fresh or ground – brightens the dish with a gentle zing
Ingredient Tips:
  • Slice meat thinly and against the grain to ensure tenderness — this makes all the difference in every bite.
  • Use fresh bell peppers for the best texture. Frozen can work in a pinch but will soften more during the slow cook.
  • Want to cut down on sugar? Swap brown sugar with a sugar-free alternative like monk fruit or omit it for a more savory profile.

Method
 

Prep Your Ingredients
  1. Start by slicing your flank steak thinly against the grain — this helps keep the meat tender as it cooks.
  2. Chop your bell peppers and onion into thin strips and mince the garlic.
  3. Tip: Try to keep the slices uniform for even cooking.
(Optional) Sear the Beef for Extra Flavor
  1. If you have a few extra minutes, heat olive oil in a skillet over medium-high heat and quickly brown the beef on both sides.
  2. This step adds a deep, caramelized flavor to the dish.
  3. It’s totally optional — skip it if you're short on time.
Make the Sauce
  1. In a bowl, whisk together:
  2. Low-sodium soy sauce
  3. Beef broth
  4. Brown sugar
  5. Minced garlic
  6. Optional: a dash of hoisin sauce or a sprinkle of ginger for more depth
Layer It All in the Slow Cooker
  1. Add the sliced beef, onions, and peppers to your slow cooker.
  2. Pour the sauce over the top, making sure everything is coated well.
  3. You don’t need to stir — the magic happens as it simmers.
Cook Low and Slow
  1. Low setting: 5–6 hours (for maximum tenderness)
  2. High setting: 3–4 hours (if you’re short on time)
  3. Your kitchen will smell amazing as it cooks — just try to resist sneaking a bite!
Thicken the Sauce
  1. About 20–30 minutes before serving:
  2. Mix 1 tablespoon cornstarch with 2 tablespoons water to make a slurry.
  3. Stir it into the slow cooker to thicken the sauce into that luscious, takeout-style glaze.
Serve and Enjoy
  1. Once the sauce is thickened and the beef is fork-tender, it’s ready to serve.
  2. Pair it with steamed rice, noodles, or a low-carb side like cauliflower rice for a comforting and complete meal.

Notes

Nutrition Information (Per Serving)
  • Calories: 350
  • Total Fat: 12g
  • Saturated Fat: 3.5g
  • Cholesterol: 75mg
  • Sodium: 700mg
  • Total Carbohydrates: 18g
  • Dietary Fiber: 3g
  • Sugars: 8g
  • Protein: 35g