Name: Crockpot Beef and Broccoli
Prep time: 15 min
Cook time: 360 min
Total time: 375 min
Ingredients: 1 pound beef sirloin, sliced thin (Thin slices cook evenly in the crockpot.); 2 cups broccoli florets (For crisper broccoli, add during the last 30-45 minutes of cooking.); 1/2 cup soy sauce (Use low-sodium if you’re watching salt.); 1/4 cup brown sugar (Light or dark both work.); 2 tablespoons garlic, minced (About 4 cloves.); 1 tablespoon ginger, minced (Fresh tastes best; ground ginger can substitute — use 1/2 tsp.); 1 tablespoon cornstarch (Used to thicken the sauce.); 1/4 cup water (To make the cornstarch slurry.); Cooked rice (For serving.)

Jump to Recipe Print Recipe

I grew up watching a slow cooker hum away on weeknights, and this Crockpot Beef and Broccoli is the kind of dinner that feels like a warm, familiar hug — but fast. It’s tender slices of sirloin simmered in a sweet-salty sauce and spooned over steaming rice. Perfect for busy evenings when you want takeout flavor without the drive, and easy enough to make on repeat.

Why you’ll love this dish

This recipe checks a lot of boxes: minimal hands-on time, inexpensive ingredients, and family-friendly flavors that please picky eaters. Because it cooks low and slow, even a modest cut of sirloin becomes fork-tender. It’s also highly adaptable — swap the rice for cauliflower rice to cut carbs, or double the sauce for leftovers.

“Weeknight magic: tender beef, bright broccoli, and a sauce you’ll want to drizzle on everything.” — A regular at my dinner table

How this recipe comes together

Start-to-finish overview so you know what to expect:

You’ll layer thinly sliced sirloin and broccoli in the crockpot.
Whisk together a simple sauce of soy, brown sugar, garlic, ginger and a cornstarch slurry.
Pour the sauce over the meat and vegetables, then slow-cook until the beef is tender.
Serve it all over rice and spoon extra sauce on top.

This process keeps things simple — prep takes about 10–15 minutes, then the slow cooker does the heavy lifting. If you like other broccoli-forward dishes, try this twist on a casserole for a different dinner night: https://mixmirth.com/cheesy-turkey-and-broccoli-casserole/.

Gather these items

1 pound beef sirloin, sliced thin (thin slices cook evenly in the crockpot)
2 cups broccoli florets (see note about timing below)
1/2 cup soy sauce (use low-sodium if you’re watching salt)
1/4 cup brown sugar (light or dark both work)
2 tablespoons garlic, minced (about 4 cloves)
1 tablespoon ginger, minced (fresh tastes best; ground ginger can substitute — use 1/2 tsp)
1 tablespoon cornstarch
1/4 cup water (to make the cornstarch slurry)
Cooked rice, for serving

Ingredient notes and swaps:

Beef: flank or skirt steak can work if sliced thin against the grain. For a lighter swap, try chicken sausage in a similar broccoli-forward dish: https://mixmirth.com/chicken-sausage-and-broccoli-orzo/.
Soy sauce alternatives: tamari for gluten-free, or coconut aminos for soy-free (note flavor changes).
Broccoli: frozen florets are fine — no thawing needed if using frozen.

Step-by-step instructions

Place the thinly sliced beef in the crockpot in an even layer. Scatter the broccoli florets on top (for crisper broccoli, add during the last 30–45 minutes of cooking).
In a small bowl, whisk together the soy sauce, brown sugar, minced garlic, minced ginger, cornstarch, and water until smooth. The cornstarch should be fully dissolved to avoid lumps.
Pour the sauce evenly over the beef and broccoli. Stir gently if you want the sauce distributed more thoroughly.
Cover and cook on LOW for 5–6 hours or on HIGH for 3–4 hours, until the beef is tender and the sauce has thickened. If the sauce is thin at the end, remove the lid and cook on HIGH 15–20 minutes to reduce, or stir and add a touch more cornstarch slurry to thicken.
Serve the beef and broccoli over warm cooked rice and spoon extra sauce over the top.

Best ways to enjoy it

Serve over steamed jasmine or brown rice for a classic bowl.
For a lighter plate, use cauliflower rice or a bed of quick-sauteed bok choy.
Garnish with toasted sesame seeds, sliced green onions, or a drizzle of toasted sesame oil for extra aroma.
For a takeout-style platter, add a side of egg rolls or simple cucumber salad.

Storage and reheating tips

Refrigerate: Store leftovers in an airtight container for up to 3–4 days. Cool to room temperature (no more than two hours) before refrigerating.
Freeze: Transfer to freezer-safe containers and freeze for up to 2–3 months. Thaw in the fridge overnight before reheating.
Reheat: Warm gently on the stovetop over medium-low until heated through, or microwave in 1-minute bursts, stirring between intervals. If the sauce thickened in storage, add a splash of water or broth while reheating.
Food-safety note: Ensure leftovers reach 165°F (74°C) when reheating. Do not refreeze previously thawed leftovers unless cooked again.

Pro chef tips

Slice the beef very thin against the grain — thinner slices shorten cook time and make meat more tender.
If you prefer brighter, firmer broccoli, add florets in the last 30–45 minutes instead of at the start.
To deepen flavor, sear the sliced beef quickly in a hot skillet before adding to the slow cooker. It’s optional but adds caramelized notes.
If the sauce tastes too salty, balance it with a splash of rice vinegar or a teaspoon of honey.
For a glossy restaurant-style finish, stir in 1 teaspoon of toasted sesame oil right before serving.

Creative twists

Spicy Beef and Broccoli: Add 1–2 teaspoons of chili garlic sauce or a few crushed red pepper flakes to the sauce.
Stir-fry finish: After slow cooking, quickly flash-fry the beef and broccoli in a hot skillet to revive texture and get some char.
Gluten-free: Use tamari or gluten-free soy sauce.
Vegetarian swap: Substitute tofu or tempeh for the beef and add mushrooms for umami.
Fusion bowl: Serve over noodles and top with crushed peanuts and cilantro for a Thai-inspired spin — or try pairing the broccoli with pasta and creamy elements in a different recipe like this bowtie pasta with beef and cream: https://mixmirth.com/bowtie-pasta-with-beef-cream-garlic-and-parmesan/.

Your questions answered

Q: Can I put the broccoli in at the beginning?
A: Yes — the original method places broccoli in at the start for convenience. But broccoli will soften significantly over hours. If you prefer crisp-tender florets, add them during the last 30–45 minutes of cooking.

Q: What cut of beef is best for the slow cooker?
A: Sirloin, flank, or skirt steak sliced thin work well. Tougher cuts like chuck can also be used and become very tender, but they will yield a different texture and more beefy richness.

Q: Can I make the sauce thicker?
A: Yes. If the sauce is thin, mix an additional 1 teaspoon cornstarch with 2 tablespoons cold water, stir into the crockpot near the end of cooking, and cook another 15–20 minutes until thickened.

Q: Is this safe to leave in the crockpot all day?
A: A slow cooker on LOW keeps food at safe temperatures when used properly. Avoid adding perishable ingredients and leaving the appliance unattended for excessive times beyond the recommended cooking window. Always ensure food reaches a safe temperature before serving.

Q: How long does it take to prep?
A: Plan 10–15 minutes for slicing the beef and mixing the sauce — most time is hands-off cooking.

Conclusion

This Crockpot Beef and Broccoli is a reliable weeknight winner — minimal prep, comforting flavor, and plenty of room for tweaks. For variations and similar slow-cooker takes, you may enjoy this detailed slow-cooker version from I Heart Naptime: https://www.iheartnaptime.net/crockpot-beef-and-broccoli-recipe/ and another helpful guide from The Recipe Critic with step-by-step photos and tips: https://therecipecritic.com/slow-cooker-beef-and-broccoli/.