Slow Cooker Pepper Steak
A flavorful and effortless Slow Cooker Pepper Steak recipe featuring tender beef strips, vibrant bell peppers, and a savory soy-based sauce. Perfect for busy weeknights, this hearty dish combines convenience with bold taste, delivering a comforting home-cooked meal with minimal prep and maximum satisfaction.
- Author: Sophie
- Prep Time: 15 minutes
- Cook Time: 4 to 6 hours (low) or 2 to 3 hours (high)
- Total Time: 4 hours 15 minutes to 6 hours 15 minutes (low) or 2 hours 15 minutes to 3 hours 15 minutes (high)
- Yield: 4 servings 1x
- Category: Main Course
- Method: Slow Cooking
- Cuisine: American/Asian Fusion
- Diet: Gluten Free (use tamari and gluten-free broth)
Meat and Vegetables
- 1 lb sirloin or flank steak, thinly sliced into strips
- 1 each green bell pepper, sliced into strips
- 1 each red bell pepper, sliced into strips
- 1 each yellow bell pepper, sliced into strips
- 1 medium onion, sliced into strips
- 3 garlic cloves, minced
Sauce & Seasoning
- ⅓ cup soy sauce (or tamari for gluten-free)
- ½ cup beef broth (use reduced sodium if preferred)
- 2 tablespoons brown sugar
- Freshly cracked black pepper, to taste
Other
- 2 tablespoons olive oil or vegetable oil (for browning beef)
- 1 tablespoon cornstarch (for thickening)
- 1 tablespoon cold water (to mix with cornstarch)
- Prepare the Beef and Vegetables: Slice the beef thinly across the grain for maximum tenderness. Cut the bell peppers and onion into strips, and mince the garlic cloves to release their flavor.
- Brown the Beef: Heat oil in a skillet over medium-high heat. In batches, quickly brown the beef strips to add caramelized flavor and seal in juices. Transfer the browned beef to the slow cooker.
- Mix the Sauce: In a bowl, whisk together soy sauce, beef broth, brown sugar, minced garlic, and freshly cracked black pepper. This creates a rich and balanced sauce that will infuse the dish.
- Combine and Slow Cook: Add the sliced bell peppers and onions on top of the beef in the slow cooker. Pour the sauce evenly over all ingredients. Cover and cook on low for 4 to 6 hours or on high for 2 to 3 hours, until beef is tender and peppers are cooked but still retain some texture.
- Thicken the Sauce: About 15 minutes before serving, mix cornstarch with cold water to make a slurry. Stir this into the slow cooker and cook uncovered to thicken the sauce to a glossy consistency.
Notes
- Thin slices of beef help it cook quickly and remain tender.
- Browning the beef before slow cooking deepens the flavor.
- Use fresh garlic and freshly cracked pepper for vibrant, fresh notes.
- Add cornstarch slurry late to avoid overly thick or gloopy sauce.
- Cooking times may vary based on your slow cooker; check tenderness rather than relying on exact times.
Nutrition
- Serving Size: 1 serving
- Calories: 320 kcal
- Sugar: 6 g
- Sodium: 650 mg
- Fat: 14 g
- Saturated Fat: 4 g
- Unsaturated Fat: 9 g
- Trans Fat: 0 g
- Carbohydrates: 14 g
- Fiber: 3 g
- Protein: 30 g
- Cholesterol: 75 mg
Keywords: slow cooker, pepper steak, beef recipe, easy dinner, comfort food, gluten free, meal prep, weeknight meal