🍳🔥 Beef Pepper Steak Stir

📝𝑰𝒏𝒈𝒓𝒆𝒅𝒊𝒆𝒏𝒕𝒔
500g beef sirloin or flank steak, thinly sliced
1 green bell pepper, sliced into strips
1 red bell pepper, sliced into strips
1 large white onion, sliced
3 tbsp soy sauce
1 tbsp oyster sauce
1 tbsp cornstarch (mixed with 2 tbsp water, for slurry)
1 tbsp cooking oil
2 cloves garlic, minced
½ tsp ground black pepper
½ cup water or beef broth

👩‍🍳𝑪𝒐𝒐𝒌𝒊𝒏𝒈 𝑷𝒓𝒐𝒄𝒆𝒔𝒔