There is something deeply comforting about coming home to the savory aroma of a perfectly cooked meal waiting for you in the kitchen. This slow cooker beef and broccoli offers a wonderful balance of tender steak and vibrant vegetables, all brought together by a rich, velvety sauce that is far better than any takeout option.
It is a wholesome, nourishing dish that features succulent slices of flank steak coated in a savory glaze, served beautifully over a bed of warm grains.
Recipe Details
- Flavor Profile: A delightful mix of savory, umami, and slightly sweet notes with a subtle kick of heat from the chili-garlic paste.
- Textures: The beef becomes exceptionally tender after its slow cook, while the broccoli retains just enough texture to provide a satisfying bite against the silky sauce.
- Total Active Time: Approximately 15 minutes of hands-on prep time.
- Cooking Time: A total of 2 hours, with 1 1/2 hours on low and 30 minutes on high.
- Difficulty Level: Very easy, perfect for busy weeknights when you want a home-cooked meal without the stress.
What You’ll Need
To bring this meal together, you will need a reliable 4-quart or larger slow cooker and a few basic kitchen tools like a mixing bowl and a whisk. The ingredients consist of high-quality flank steak, fresh broccoli florets, and a pantry-friendly sauce base that builds the core of the flavor.
Ingredient Notes
- Flank Steak: This cut of beef is ideal for slow cooking because it absorbs flavors beautifully. Be sure to slice it across the grain to ensure every bite is tender.
- Low-Sodium Broth and Soy Sauce: Using low-sodium versions allows you to control the salt levels of your dish while still enjoying that deep, savory base.
- Oyster Sauce: This is the secret to the glossy, rich consistency of the sauce. It provides a depth of flavor that is essential to the final result.
- Chili-Garlic Paste: This adds a nice warmth to the dish. If you prefer a milder meal, you can scale back the amount to suit your personal preferences.
- Cornstarch: This is a vital thickening agent. Whisking it into a slurry with water before adding it to the slow cooker ensures you get a smooth, lump-free sauce.
Add-ins and Substitutions
- Vegetable Variations: While broccoli is the star here, you can easily add sliced carrots or snap peas during the final 30 minutes of cooking if you enjoy extra color and crunch.
- Spice Levels: If you love heat, feel free to add a bit more chili-garlic paste or a dash of red pepper flakes before serving.
- Grain Options: While brown rice is traditional and delicious, quinoa or even cauliflower rice work wonderfully if you are looking for a lighter base.

How to Make Slow Cooker Beef and Broccoli
Creating this dish is a straightforward process that rewards you with deep, developed flavors.
- Begin by lightly coating your slow cooker with nonstick spray, which makes cleanup much easier. Place your thinly sliced flank steak into the cooker.
- In a separate bowl, whisk together the beef broth, soy sauce, oyster sauce, honey, rice vinegar, chili-garlic paste, and minced garlic.
- Pour this fragrant mixture over the beef and stir until the meat is evenly coated. Cover the slow cooker and cook on low for 1 1/2 hours.
- Once the time is up, whisk the cornstarch with 1/4 cup of water in a small bowl until smooth. Stir this slurry into the slow cooker.
- Add the broccoli florets on top of the beef and sauce. Cover again, switch the heat to high, and cook for another 30 minutes until the broccoli is perfectly tender.
Pro Tip: Always slice your flank steak thinly and across the grain. This technique is the best way to ensure the meat remains melt-in-your-mouth tender throughout the cooking process.
Recipe Tips
- Do not skip the cornstarch slurry. It is essential for transforming the thin cooking juices into a thick, restaurant-style glaze that clings to the beef and broccoli.
- Keep the lid closed during the cooking process. Frequent lifting of the lid releases heat and extends the cooking time, so try to resist the urge to peek until the very end.
- If your broccoli crowns are quite large, ensure you chop them into bite-sized florets so they cook evenly within the 30-minute window on high heat.
FAQs
Can I use a different cut of beef?
Flank steak is highly recommended for its texture, but you could use top round or sirloin if sliced very thinly.
Is it okay to cook this on high for the full duration?
For the best results, stick to the 1 1/2 hours on low. This allows the beef to tenderize properly before the final high-heat finish.
What should I do if the sauce is too thin?
If you prefer a thicker sauce, you can stir in an extra teaspoon of cornstarch mixed with a splash of water and let it cook for a few additional minutes on high.
Serving Suggestions
Serve this dish immediately while hot to enjoy the best texture of the broccoli. It pairs beautifully with a fluffy scoop of brown rice or quinoa to soak up all that wonderful sauce. For an extra touch of flavor and texture, garnish generously with fresh chopped green onions and a sprinkle of toasted sesame seeds.
Make This Recipe in Advance
You can easily prep this meal by slicing the beef and washing or chopping the broccoli ahead of time. Store the beef in the refrigerator in an airtight container until you are ready to start. The sauce can also be whisked together in advance and kept in the fridge. When you are ready to start, simply combine everything in the slow cooker according to the instructions. Leftovers store well in the refrigerator for up to 3 days and can be gently reheated on the stovetop or in the microwave.
Print
Slow Cooker Beef and Broccoli
- Total Time: 2 hours 15 minutes
- Yield: 4 servings 1x
Description
A wholesome and nourishing slow cooker beef and broccoli recipe featuring succulent slices of flank steak coated in a savory, restaurant-style glaze.
Ingredients
1 1/2 pounds flank steak (cut across grain into thin slices)
1 cup low-sodium beef broth
1/4 cup low-sodium soy sauce
1/4 cup oyster sauce
1 tablespoon honey
1 tablespoon rice vinegar
2 teaspoons chili-garlic paste (or Sriracha, or 1/2 teaspoon red pepper flakes, plus additional to taste)
2 teaspoons minced garlic (about 2 large cloves)
2 tablespoons cornstarch
5 cups broccoli florets (about 2 small crowns)
Prepared brown rice (or quinoa for serving)
Chopped green onions (and toasted sesame seeds optional for serving)
Instructions
Lightly coat a 4-quart or larger slow cooker with nonstick spray and add the sliced beef.
In a separate bowl, combine the beef broth, soy sauce, oyster sauce, honey, rice vinegar, chili-garlic paste, and minced garlic. Pour this mixture over the beef in the slow cooker and stir to coat. Cover and cook on low for 1 1/2 hours.
In a small bowl, whisk together the cornstarch with 1/4 cup of water. Stir this slurry into the slow cooker.
Add the broccoli florets on top of the beef and sauce. Cover, switch the heat to high, and cook for an additional 30 minutes, or until the broccoli is tender.
Serve hot over brown rice, garnished with green onions and sesame seeds if desired.
Notes
Do not skip the cornstarch slurry. It is essential for transforming the thin cooking juices into a thick, restaurant-style glaze that clings to the beef and broccoli.
Keep the lid closed during the cooking process. Frequent lifting of the lid releases heat and extends the cooking time, so try to resist the urge to peek until the very end.
If your broccoli crowns are quite large, ensure you chop them into bite-sized florets so they cook evenly within the 30-minute window on high heat.
- Prep Time: 15 minutes
- Cook Time: 2 hours
- Category: Main Course
- Cuisine: Asian-Inspired
Nutrition
- Calories: N/A
- Fat: N/A
- Carbohydrates: N/A
- Protein: N/A

