Beef and Bok Choy Stir Fry {Ready in 20 Minutes!}

Ingredients

• 1/4 cup low sodium chicken broth
• 1/4 cup oyster sauce (GF if needed)
• 2 tbsp low sodium soy sauce (GF if needed)
• 1 tbsp ginger, minced
• 1 tbsp garlic, minced
• 1 teaspoon cornstarch
• 4 tsp. vegetable oil, divided
• 1 1/3 lbs. lean sirloin steak, cut into strips
• 1 lb bok choy, chopped
• 1 cup mushrooms
• 4 green onions, chopped