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PrintThis Crock Pot Pepper Steak features tender beef strips slow-cooked with colorful bell peppers in a savory soy-based sauce. Easy, comforting, and perfect for weeknight meals or meal prep.
1.5 lbs beef sirloin or flank steak, thinly sliced
1 red bell pepper, sliced
1 green bell pepper, sliced
1 yellow bell pepper, sliced
1 medium onion, sliced
3 garlic cloves, minced
½ cup low-sodium soy sauce
1 cup beef broth
1 tbsp tomato paste
1 tbsp brown sugar
½ tsp black pepper
1 tbsp cornstarch + 2 tbsp water (slurry)
Optional: 1 tsp sesame oil, green onions, sesame seeds
Place sliced onions and bell peppers in the bottom of the Crock Pot.
Layer beef strips over vegetables and sprinkle garlic on top.
In a bowl, whisk together soy sauce, beef broth, tomato paste, brown sugar, and black pepper. Pour over the meat and vegetables.
Cover and cook on Low for 5–6 hours or High for 3–4 hours.
Mix cornstarch and water into a slurry. Add to the Crock Pot during the final 30 minutes and stir gently.
Let sauce thicken, then finish with sesame oil and garnish if desired.
Serve hot over rice, noodles, or mashed potatoes.
Add chili flakes for heat, or swap tomato paste with hoisin for a sweeter variation. Can be refrigerated or frozen for easy leftovers.