Ultimate Slow Cooker Mongolian Beef for Busy Weeknights
Ultimate Slow Cooker Mongolian Beef is a delicious, fuss-free dinner perfect for busy weeknights. Tender slices of beef are slow-cooked in a rich, savory-sweet sauce made from soy sauce, brown sugar, garlic, and fresh ginger, resulting in melt-in-your-mouth flavor with minimal hands-on time. Ideal for busy schedules, it offers effortless cleanup and versatile serving options over rice, noodles, or veggies.
- 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: Asian
- Diet: Gluten Free
Ingredients
Scale
Beef and Meat Preparation
- 1.5 pounds flank steak or sirloin, thinly sliced against the grain
- 1 tablespoon cornstarch (optional, for coating beef)
- 1 tablespoon vegetable oil (optional, for browning)
Sauce Ingredients
- 1/2 cup soy sauce (use low sodium if preferred)
- 1/2 cup brown sugar
- 3 cloves garlic, minced
- 1 tablespoon freshly grated ginger
Finishing Touches
- 2 green onions, sliced thinly for garnish
- 1 tablespoon cornstarch mixed with 2 tablespoons cold water (cornstarch slurry to thicken sauce)
Instructions
- Prepare the Beef: Slice your beef thinly against the grain to ensure tenderness after slow cooking. Optionally, lightly coat the strips with cornstarch to help thicken the sauce later and enhance texture.
- Mix the Sauce: In a bowl, whisk together soy sauce, brown sugar, minced garlic, and freshly grated ginger. This mixture will create the rich, flavorful marinade and sauce that Mongolian beef is known for.
- Brown the Beef (Optional): For extra flavor, heat vegetable oil in a pan over medium-high heat and quickly sear the beef strips until just browned. This step adds depth but is not required.
- Combine in Slow Cooker: Place the beef strips in your slow cooker and pour the sauce evenly over them. Gently stir to coat all the beef. Cover and cook on low for 4-6 hours or on high for 2-3 hours.
- Thicken the Sauce: About 15 minutes before serving, stir together cornstarch and cold water to form a slurry. Add this to the slow cooker and cook uncovered to thicken the sauce, achieving a glossy, luscious texture.
- Garnish and Serve: Just before serving, sprinkle the thinly sliced green onions over the beef to add freshness, color, and a slight crunch that complements the tender meat perfectly.
Notes
- Thin slicing matters: Cut the beef thin and against the grain to keep it tender after slow cooking.
- Don’t skip browning: Quickly searing the beef adds caramelized flavor to elevate the dish.
- Timing is key: Stick to recommended slow cooker times to avoid tough beef.
- Fresh herbs last minute: Add green onions at the end to preserve crisp texture and vibrant look.
- Adjust sweetness: Taste the sauce halfway through cooking and add more brown sugar if preferred sweeter.
Nutrition
- Serving Size: 1 serving
- Calories: 350 kcal
- Sugar: 16 g
- Sodium: 850 mg
- Fat: 10 g
- Saturated Fat: 3.5 g
- Unsaturated Fat: 6 g
- Trans Fat: 0 g
- Carbohydrates: 25 g
- Fiber: 1 g
- Protein: 38 g
- Cholesterol: 85 mg
Keywords: Mongolian beef, slow cooker recipe, easy dinner, slow cooked beef, sweet and savory beef, gluten-free Mongolian beef, weeknight meals
