Cooking can evoke a sense of nostalgia and warmth, especially when it comes to dishes that bring families together. One such delightful meal is Slow Cooker Mongolian Beef and Broccoli. This dish is pure comfort food that is not only pleasing to the palate but also simple to prepare, making it a perfect choice for home cooks who appreciate hearty, flavorful meals.
At the heart of this recipe is tender beef sirloin, complemented beautifully by vibrant broccoli florets. The combination of soy sauce and brown sugar creates a rich, savory glaze that perfectly balances sweetness and saltiness. With garlic and ginger adding just the right amount of zest, each bite bursts with flavor. The beef broth ensures the dish is moist, allowing the flavors to meld beautifully over the long cooking time.
One of the best things about this recipe is how straightforward it is. Simply combine sliced beef, soy sauce, brown sugar, garlic, ginger, and beef broth in a slow cooker. After letting it cook, you add the broccoli in the last half hour and thicken the sauce with a cornstarch slurry. It’s that easy! Serve it all over a bed of rice for a complete meal that your family will love.
This dish is perfect for chilly nights when you crave something warm and comforting or when you want to impress guests at a potluck. It’s truly versatile and fits well into any occasion.

Why You’ll Love This Slow Cooker Mongolian Beef And Broccoli
- Quick Preparation: With minimal active cooking time, this recipe is perfect for busy days.
- Simple Ingredients: You likely have most of these items in your pantry already.
- Comfort Food: This dish warms you up and satisfies your hunger, making it great for family dinners.
- Make Ahead: Cook it in the morning, and it will be perfectly ready to enjoy in the evening.
- Expandable: Easily adjust the recipe to serve more people by scaling up the ingredients.
Beef Tips
When choosing beef for this recipe, always go for good quality. Look for sirloin that is bright red, with a firm texture and a fair amount of marbling. This marbling helps the beef stay tender during the long slow cooking process. If possible, ask your butcher for recommendations; they can guide you to the best cut of beef suited for slow cooking. Remember, the key to delicious Mongolian beef lies in the quality of the meat you use.
Options for Substitutions
- Beef: You can substitute beef sirloin with flank steak or even chicken if you prefer poultry.
- Broccoli: Other vegetables like snap peas or bell peppers work well if you want to change it up.
- Soy Sauce: For a gluten-free version, try tamari sauce.
- Brown Sugar: Honey or maple syrup can be used for a different sweetness profile.
- Beef Broth: Vegetable broth or chicken broth can replace beef broth for a lighter flavor.
- Cornstarch: If unavailable, arrowroot powder can be a great alternative for thickening the sauce.
Watch Out for These Mistakes
When preparing this delicious dish, there are a few common pitfalls to avoid. First, be cautious not to overcook the beef. Cooking it too long can make it tough and chewy instead of tender. The meat only needs about 3-4 hours on high or 6-8 hours on low to become melt-in-your-mouth tender.
Secondly, adding the broccoli too early can result in mushy vegetables. You want the broccoli to be vibrant and slightly crisp when served. So, hold off until the last 30 minutes of cooking.
Lastly, seasoning is crucial. You might find yourself tempted to add extra salt or seasoning, but the soy sauce provides plenty of flavor. Taste first before making any adjustments.

What to Serve With Slow Cooker Mongolian Beef And Broccoli?
This flavorful dish pairs wonderfully with steamed jasmine rice or fluffy white rice. You might also consider serving it alongside a fresh cucumber salad for a refreshing crunch. If you want something heartier, garlic bread can soak up the delicious sauce as well.
Storage Instructions
Store: Store any leftovers in an airtight container in the fridge for up to 3 days.
Freeze: You can freeze this dish for up to 2 months. Be sure to allow it to cool completely before transferring it to a freezer-safe container.
Reheat: For reheating, use the stovetop over medium heat until warmed through. You can also use the microwave; cover and heat for about 2-3 minutes, stirring halfway.
Recipe Info
Preparation Time: 20 minutes
Cooking Time: 6-8 hours on low or 3-4 hours on high
Total Time: 6 hours 20 minutes to 8 hours 20 minutes
Level of Difficulty: Easy
Servings: Serves 4-6
Estimated Nutrition
Estimated nutrition for the whole recipe (without optional ingredients):
- Calories: 1200-1600
- Protein: 80-100g
- Fat: 50-70g
- Carbohydrates: 100-130g
Ingredients
- 1 pound beef sirloin, sliced
- 1 cup broccoli florets
- 1/2 cup soy sauce
- 1/2 cup brown sugar
- 1 tablespoon garlic, minced
- 1 tablespoon ginger, minced
- 1 cup beef broth
- 1 tablespoon cornstarch
- 1 tablespoon water
- Cooked rice for serving

Step-by-Step Instructions
Step 1: Prepare Ingredients
Start by slicing the beef sirloin into thin strips. This helps it cook evenly and absorb all the flavors. Gather your other ingredients so you have everything ready to go.
Step 2: Combine Ingredients in Slow Cooker
In a slow cooker, combine the sliced beef, soy sauce, brown sugar, minced garlic, minced ginger, and beef broth. Stir everything together gently to ensure the beef is well-coated with the sauce.
Step 3: Cook It Low and Slow
Cover the slow cooker and select either the low setting for 6-8 hours or the high setting for 3-4 hours. There’s no need to stir during the cooking time.
Step 4: Add Broccoli
About 30 minutes before the cooking time is complete, carefully add the broccoli florets to the slow cooker. Stir to distribute them in the sauce and cover again to let them steam.
Step 5: Thicken the Sauce
In a small bowl, mix the cornstarch and water to form a slurry. Stir this mixture into the slow cooker to thicken the sauce. Let it cook for the final 30 minutes with the lid on.
Step 6: Serve and Enjoy
Once everything is cooked and the sauce has thickened, serve the Mongolian beef and broccoli over a bed of warm rice. Enjoy this flavorful and comforting meal with your family and friends.
In conclusion, Slow Cooker Mongolian Beef and Broccoli is an easy yet impressive dish you can enjoy any day of the week. The comforting flavors and simplicity make it a true favorite in any home. I encourage you to give this recipe a try and experience how it brings both warmth and flavor to your table. If you enjoy it, please leave a comment and share your thoughts, or explore more of my similar recipes!
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Slow Cooker Mongolian Beef and Broccoli
- Prep Time: 20 minutes
- Cook Time: 360 minutes
- Total Time: 380 minutes
- Yield: 4-6 servings 1x
- Category: Main Course
- Method: Slow Cooking
- Cuisine: Asian
- Diet: Gluten-Free (if tamari is used)
Description
A comforting and flavorful dish featuring tender beef sirloin and vibrant broccoli in a savory glaze.
Ingredients
- 1 pound beef sirloin, sliced
- 1 cup broccoli florets
- 1/2 cup soy sauce
- 1/2 cup brown sugar
- 1 tablespoon garlic, minced
- 1 tablespoon ginger, minced
- 1 cup beef broth
- 1 tablespoon cornstarch
- 1 tablespoon water
- Cooked rice for serving
Instructions
- Prepare Ingredients: Start by slicing the beef sirloin into thin strips. Gather your other ingredients.
- Combine Ingredients in Slow Cooker: In a slow cooker, combine the sliced beef, soy sauce, brown sugar, garlic, ginger, and beef broth. Stir gently.
- Cook It Low and Slow: Cover the slow cooker and select the low setting for 6-8 hours or high setting for 3-4 hours. No need to stir.
- Add Broccoli: About 30 minutes before cooking is complete, add the broccoli florets to the slow cooker and cover.
- Thicken the Sauce: Mix cornstarch and water to form a slurry. Stir this into the slow cooker to thicken the sauce and cook for an additional 30 minutes.
- Serve and Enjoy: Serve the Mongolian beef and broccoli over warm rice.
Notes
Best served with steamed jasmine rice or a fresh cucumber salad.
Nutrition
- Serving Size: 1 serving
- Calories: 350
- Sugar: 15g
- Sodium: 900mg
- Fat: 14g
- Saturated Fat: 6g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 45g
- Fiber: 2g
- Protein: 25g
- Cholesterol: 70mg