Beef Freezer Stir Fry Bags

Name: Beef Freezer Stir Fry Bags
Prep time: 5 min
Cook time: 10 min
Total time: 15 min
Cuisine: Asian
Ingredients: package beef strips; 1 cup broccoli florets (frozen); 1 cup yellow and red peppers (sliced); ½ cup onion (sliced); 2 cloves garlic (minced); 1/2 tsp. pepper; 1 tsp. dry mustard powder; 1/2 cup oyster sauce; ¼ cup soy sauce; ¼ cup orange juice; ¼ cup water; salt and pepper (to taste); 2 tsp. corn starch