1.5poundsBeef Flank SteakSlice against the grain for tenderness.
Vegetables
2-3mediumBell PeppersA mix of colors is ideal.
1mediumOnionSliced thinly.
3clovesGarlicMinced.
1cupBeef BrothLow-sodium preferred.
1/4cupSoy SauceUse tamari for gluten-free.
1tablespoonBrown SugarBalances savory flavors.
1/2teaspoonBlack PepperFreshly ground, to taste.
1tablespoonCornstarchOptional, for thickening sauce.
Garnish
2tablespoonsGreen OnionsChopped, for garnish.
Instructions
Trim excess fat from the beef flank steak and slice it thinly against the grain. Set aside.
Slice the bell peppers and onion into thin strips, and mince the garlic.
In a bowl, combine the sliced beef with minced garlic, soy sauce, brown sugar, and black pepper. Mix well and let marinate for 15 minutes.
Add a small amount of beef broth to the bottom of the slow cooker and layer the sliced onions.
Layer the marinated beef on top of the onions, spreading it evenly. Pour any remaining marinade over the beef.
Layer the sliced bell peppers over the beef, then pour the remaining beef broth into the slow cooker. If using, mix cornstarch with cold water and add it now.
Cover and cook on low for 6 to 8 hours or on high for 3 to 4 hours.
Check for doneness; the beef should be fork-tender. Stir gently before serving.
Garnish with sliced green onions and serve with rice or noodles.
Notes
For variations, consider adding jalapeños for heat or Worcestershire sauce for depth. Serve with rice, noodles, or a fresh salad.