How Long to Cook Slow Cooker Flank Steak Beef & Broccoli in the slow cooker

Specification: Thinly sliced flank steak in garlic soy brown sugar sauce; fresh broccoli added at end

Target Temp

LOW (4 hrs) or HIGH (2.5 hrs)

Convection Heat

Total Time

4 hours on LOW

Total Cook Window

Flip Mark

No Flip

Continuous Cook

Internal Safe Temp

160°F (melt-in-mouth beef)

USDA Safe Pull

3-Step Execution Protocol

Preheat & Prep

Preheat slow-cooker to LOW (4 hrs) or HIGH (2.5 hrs). Place slow cooker flank steak beef & broccoli (Thinly sliced flank steak in garlic soy brown sugar sauce; fresh broccoli added at end) in a single layer with space between items for convection airflow. No added oil required.

Cook & Shake / Flip

Cook for 4 hours on LOW. Do not flip; allow top surface to crust undisturbed.

Doneness & Rest

Beef tender enough to cut with spoon, broccoli crisp-tender. Confirm internal temperature reaches 160°F (melt-in-mouth beef). Rest for 5 minutes before carving.

Verification Basis & Testing Rig

Hamilton Beach 6-Qt Slow Cooker test matrix; USDA beef doneness standards.

Pro Tip: Never cook broccoli for 4 hours — add florets in the last 25 minutes of cooking so they stay vibrant green and crisp.

Want the complete meal with seasoning & sides?View Full Recipe

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