Step 1: Prepare the Sauce
In a small bowl, whisk together beef broth, soy sauce, brown sugar, sesame oil, garlic, and ginger until smooth.
Step 2: Add to the Crock Pot
Place the sliced beef in the crockpot and pour the sauce mixture over it. Stir gently to coat the beef evenly.
Step 3: Slow Cook
Cover and cook on LOW for 5–6 hours or HIGH for 3–4 hours, until the beef becomes tender and flavorful.
Step 4: Thicken the Sauce
In a small bowl, whisk cornstarch and water together. Add the mixture to the crockpot and stir.
Step 5: Add Broccoli
Stir in the broccoli florets and cook on HIGH for another 30 minutes, until the sauce thickens and broccoli becomes tender-crisp.
Step 6: Serve
Serve warm over steamed rice or noodles, and garnish with sesame seeds and green onions for the perfect finishing touch.