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If you’re craving something sweet, savory, and undeniably comforting, Mongolian Beef is the answer—especially when made in the slow cooker. This easy meal transforms tender slices of beef into a flavorful dish, enriched by soy sauce, ginger, and a hint of spice. Let the slow cooker do the heavy lifting while you go about your day, and come home to the enticing aroma of dinner, ready to be served.
Ingredients
- 2 pounds flank steak, thinly sliced
- ¼ cup cornstarch
- ½ cup low-sodium soy sauce
- ⅓ cup brown sugar
- 1 tablespoon fresh ginger, minced
- 3 cloves garlic, minced
- 1 teaspoon red pepper flakes (adjust to taste)
- 1 teaspoon sesame oil
- ¾ cup beef broth
- 2 tablespoons vegetable oil
- 2 green onions, thinly sliced (plus extra for garnish)
- Cooked rice for serving
Instructions
First, toss the thinly sliced flank steak in cornstarch. Make sure each piece is lightly coated, as this not only helps thicken the sauce but also gives the beef a beautifully silky texture. Heat the vegetable oil in a pan over medium-high heat, then sauté the beef in batches until it’s lightly browned but not fully cooked. This quick sear locks in flavor and ensures that every piece will remain tender in the slow cooker.
Transfer the browned beef to your slow cooker. In a small bowl, whisk together the soy sauce, brown sugar, minced ginger, garlic, red pepper flakes, sesame oil, and beef broth. Pour this flavorful mix over the beef, making sure all the slices are covered. Finally, scatter the sliced green onions on top to lend a pop of color and mild onion aroma.
Set your slow cooker on low and let the beef simmer for about 4 to 5 hours. Leave it alone for that time—that’s part of the magic! About 30 minutes before you’re ready to serve, check for seasonings. Adjust the spice level or sweetness if needed by adding more red pepper flakes or brown sugar. Serve your Mongolian Beef over a mound of hot cooked rice, and garnish with extra green onions for a bright finish.
For a thicker sauce, let the slow cooker run uncovered for the last 10 to 15 minutes, enabling the liquids to reduce naturally. Alternatively, you can whisk a little cornstarch with water, then stir it into the sauce and let it cook until it’s thickened to your liking.
This irresistible dish is ideal for busy families, meal preppers, or anyone who loves a warm, hearty meal without fuss. Want to switch things up? Feel free to throw in some veggies like broccoli or bell peppers. If you’re watching your sodium intake, opt for a reduced-sodium soy sauce, or try replacing half of the soy sauce with water. Whether you’re new to slow cooking or a seasoned pro, Mongolian Beef will earn its spot in your regular dinner lineup with its rich flavor and effortless cooking method.
