For the beef:

• 2–2½ pounds top sirloin steak, flank steak, or skirt steak
• 1 teaspoon slap ya mama seasoning
• 1 teaspoon garlic powder
• 1 teaspoon black pepper
• 1 teaspoon paprika
• ½ teaspoon red pepper flakes
• ¼ cup beef broth
• 2 tablespoons olive oil, divided

For the sauce:

• 1½ cups beef broth
• ½ cup brown sugar
• ¼ cup oyster sauce
• ½ cup soy sauce
• ¼ cup hoisin sauce
• 1 tablespoon sesame oil
• ½ teaspoon red pepper flakes
• 1 tablespoon ginger
• 1 teaspoon pepper
• 2 tablespoons cornstarch + 2 tablespoons water

For the vegetables:

• 1 large onion, diced
• 1 red bell pepper, sliced into thin strips
• 3 cloves garlic, minced
• 1 cup matchstick carrots
• 2 cups shredded cabbage
• 1–2 cups snap peas
• 3 cups broccoli florets
• 8 ounce can water chestnuts, diced
• 14 ounces lo mein noodles