Slow Cooker Pepper Steak

Recipe by Benjamin Brown

Slow Cooker Pepper Steak simmers tender beef strips, bell peppers, and onions in a savory soy-ginger sauce until the meat turns fork-tender and the sauce goes glossy.

Course: Main

Cuisine: Asian-American

Difficulty: Easy

Servings

Prep time

15 minutes

Cooking time

6 hours

Calories

320 kcal

6 hours 15 minutes

Ingredients

2 lbs flank steak, sliced thin against the grain

2 whole bell peppers, sliced (mix of colors)

1 whole yellow onion, sliced

½ cup soy sauce

½ cup beef broth

2 tbsp brown sugar

3 cloves garlic, minced

1 tbsp fresh ginger, grated

2 tbsp cornstarch

2 tbsp water

Directions

Place sliced steak, onion, garlic, ginger, soy sauce, beef broth, and brown sugar into the slow cooker and stir to combine.

Cover and cook on low for 6 hours, or until the beef is fork-tender.

Add sliced bell peppers during the last 30-45 minutes of cooking.

Whisk cornstarch and water together, then stir into the slow cooker to thicken the sauce.

Serve hot over steamed rice, garnished with sesame seeds and scallions if desired.

Nutrition Facts

Total number of serves:

1 serving (approx 1.5 cups)

Calories:

320 kcal

Cholesterol:

75 mg

Sodium:

910 mg

Potassium:

520 mg

Sugar:

7 g

Protein:

28 g

Calcium:

40 mg (4% DV)

Iron:

3.2 mg (18% DV)

I started making this Slow Cooker Pepper Steak years ago on a week when everything felt chaotic — school pickups, deadlines, a sink full of dishes — and I needed dinner to basically make itself. I tossed strips of beef, bell peppers, and a quick savory sauce into the crockpot before heading out the door, and by the time I came home, my kitchen smelled like a Chinese takeout spot in the best possible way. That was the moment this recipe earned its permanent spot in my rotation.

What I love most is how it transforms humble ingredients — flank steak, peppers, onions, a splash of soy sauce — into something that tastes like it took real effort, when really the slow cooker did all the work. The beef turns fork-tender, the peppers soften just enough to still have a little bite, and the sauce clings to every piece in a glossy, savory-sweet coat.

It's the kind of dish that makes you feel like you've got your life together, even on the days you absolutely do not.

The Inspiration Behind This Recipe

Pepper steak is a classic for a reason — it's been a takeout menu staple for decades. I wanted to recreate that same deeply savory, slightly sweet flavor profile but make it achievable on a weeknight without any stir-fry wok skills required. The slow cooker felt like the obvious answer: low, steady heat that breaks down tougher cuts of beef into something silky.

Why This Cooking Method Works

Slow cooking is perfect for cuts like flank or round steak that would turn tough and chewy with quick high-heat cooking. Given hours at a low simmer in that soy-ginger-garlic sauce, the connective tissue melts away, leaving behind beef that practically falls apart with a fork. Adding the peppers toward the end keeps them from turning mushy, so you still get that fresh, slightly crisp contrast.

Flavor Profile: What to Expect

Think savory, a little sweet, with a gentle warmth from ginger and garlic. The soy sauce base gives it that deep umami richness, while the peppers add brightness and a touch of natural sweetness as they cook down. It's comforting without being heavy — rice-bowl food at its finest.

Tips for Making the Best Slow Cooker Pepper Steak

Slice your beef against the grain for maximum tenderness. If you want a thicker sauce, whisk a cornstarch slurry into the crockpot during the last 20-30 minutes of cooking. And don't skip searing the beef first if you have a few extra minutes — it adds a layer of caramelized flavor that pays off.

Serving Suggestions

This is made for a bed of steamed white or jasmine rice, which soaks up all that glossy sauce. I also love it over rice noodles, or tucked into lettuce cups for a lighter option. A sprinkle of sesame seeds and sliced scallions on top never hurts.

Storage/Reheating

Leftovers keep beautifully in the fridge for up to four days. Reheat gently on the stovetop or in the microwave — the beef only gets more tender as it sits in that sauce. It also freezes well for up to three months; just thaw overnight in the fridge before reheating.

Why This Recipe Deserves a Spot in Your Rotation

It's genuinely hands-off, uses affordable ingredients, and delivers big, craveable flavor without a single complicated step. On the nights you need dinner to practically cook itself, this is the one I reach for.

Recommended Drink Pairing

For something with a kick, a cold Riesling or a light Pinot Noir plays beautifully with the savory-sweet sauce. For a non-alcoholic option, try a ginger beer or iced jasmine tea — both echo the warm spice notes in the dish.

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