Slow Cooker Beef and Broccoli Recipe is an easy slow cooker dinner that's healthy, high protein, and low carb with tender beef, fresh broccoli, and a savory sugar-free sauce. It's perfect for busy weeknights, meal prep, or whenever you want takeout flavors made at home.

This recipe uses simple ingredients and lets the Crock Pot do most of the work. Using a sugar-free stir fry sauce and golden monk fruit keeps this high protein low carb meal flavorful while making it a great option for anyone following a keto friendly lifestyle.
Things to Know Before Making Slow Cooker Beef and Broccoli Recipe
- Slice the beef against the grain for the most tender bites.
- Add the broccoli during the last 30 minutes so it stays bright green and slightly crisp.
- Use a sugar-free stir fry sauce to keep the recipe low carb and keto friendly.
- Whisk the cornstarch slurry well before adding it to prevent lumps in the sauce.
I've been creating high protein, healthy recipes for readers since 2018. Swapping traditional sugary sauces for lower-carb versions is one of my favorite ways to make healthier takeout-inspired dinners without sacrificing flavor. If you enjoy recipes like this, try our Easy Crockpot Barbacoa, Keto Pot Roast, and Low Carb Chili Without Beans.

Ingredients Overview
- Flank steak or stew beef: Flank steak stays especially tender when sliced thinly. Sirloin also works well.
- Onion and garlic: Fresh is best, but frozen diced onion and jarred garlic are convenient substitutes.
- Beef broth: Low-sodium broth gives you more control over the final seasoning.
- Sugar-free stir fry sauce: G Hughes Sugar Free Stir Fry Sauce or Primal Kitchen Stir Fry Sauce both work well to keep this recipe low carb.
- Golden monk fruit sweetener: A simple 1:1 replacement for brown sugar.
- Cornstarch: Used to thicken the sauce. Arrowroot starch also works.
- Broccoli florets: Fresh broccoli provides the best texture. Frozen broccoli can be used if added near the end of cooking.
Full ingredient amounts are listed in the recipe card below.
How to Cook Slow Cooker Beef and Broccoli Recipe
Step 1: Place the sliced beef, onion, garlic, beef broth, sugar-free stir fry sauce, and golden monk fruit sweetener into the slow cooker. Stir until the beef is evenly coated.

Step 2: Cover and cook on Low for 5 to 6 hours or High for 3 to 4 hours until the beef is tender.
Step 3: Whisk together the cornstarch and cold water until smooth. Stir the slurry into the slow cooker and mix well.

Step 4: Stir in the broccoli florets during the final 30 minutes of cooking. Cover again and cook until the broccoli is tender but still slightly crisp.
Substitutions and Variations
- Swap flank steak for sirloin or stew meat.
- Make it spicy with crushed red pepper flakes or sriracha.
- Replace cornstarch with arrowroot starch if preferred.
- Add sliced mushrooms, bell peppers, or snap peas during the last hour of cooking.
- Serve over cauliflower rice for a low carb meal or steamed rice for a traditional version.
What to Serve With Slow Cooker Beef and Broccoli Recipe
Serve this beef and broccoli over cauliflower rice to keep it low carb or with steamed jasmine rice if you're not limiting carbs.
Storage and Freezing
Refrigerate leftovers in an airtight container for 3 to 4 days. Reheat at 350°F until warmed through or warm gently in the microwave or on the stovetop. Freeze for up to 3 months, preferably without cauliflower rice, and thaw overnight in the refrigerator before reheating.

FAQs
Can I make slow cooker beef and broccoli keto?
Yes. Use a sugar-free stir fry sauce like G Hughes or Primal Kitchen along with golden monk fruit sweetener, then serve it over cauliflower rice for a keto friendly meal.
What is the best cut of beef for slow cooker beef and broccoli?
Flank steak is a favorite because it becomes tender while still holding its shape. Sirloin and stew meat also work well.
Can I use frozen broccoli?
Yes. Add frozen broccoli during the final 20 to 30 minutes of cooking so it doesn't become overcooked.
Why is my beef tough?
Beef usually becomes tough if it hasn't cooked long enough. Continue cooking until it becomes fork tender.
Can I make this recipe ahead of time?
Yes. It reheats well, making it an excellent option for meal prep lunches and dinners.
More Easy Slow Cooker Recipes
- Crock Pot Italian Beef (No Carb Keto)
- Crock Pot Mississippi Pot Roast with Potatoes and Carrots
- Low Carb Taco Soup Recipe

Recipe

Easy Crock Pot Broccoli Beef (Healthy Low Carb Recipe)
Ingredients
- 1 ½ pounds flank steak or stew beef, thinly sliced
- 1 medium onion, diced
- 2 cloves garlic, minced
- ½ cup beef broth
- ¼ cup sugar-free stir fry sauce (such as G Hughes or Primal Kitchen)
- 1 tablespoon golden monk fruit sweetener
- 1 tablespoon cornstarch
- 2 tablespoons cold water
- 10-11 ounces broccoli florets
Instructions
- Add the sliced beef, onion, garlic, beef broth, sugar-free stir fry sauce, and golden monk fruit sweetener to the slow cooker. Stir everything together until the beef is coated in the sauce.
- Cover and cook on Low for 5 to 6 hours or High for 3 to 4 hours, until the beef is fork tender.
- About 30 minutes before serving, whisk together the cornstarch and cold water to make a slurry. Stir it into the slow cooker to thicken the sauce.
- Add the broccoli florets, cover again, and cook for another 30 minutes until the broccoli is tender but still bright green.
- Taste and adjust the seasoning if needed. Garnish with sesame seeds or sliced green onions before serving if desired.
Notes
- For the lowest carb version, use a sugar-free stir fry sauce such as G Hughes Sugar Free Stir Fry Sauce or Primal Kitchen Stir Fry Sauce. These help keep the recipe keto friendly while adding plenty of flavor.
- Golden monk fruit sweetener is an easy 1:1 replacement for brown sugar in this recipe.
- Slice the beef thinly across the grain for the most tender texture.
- Serve over cauliflower rice for a complete low carb meal or with steamed rice if preferred.
- Store leftovers in an airtight container in the refrigerator for up to 4 days or freeze for up to 2 months.
- Calories: 285
- Protein: 34g
- Carbohydrates: 8g
- Fat: 12g
Nutrition







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