Spicy Beef Filet in Oyster Sauce Recipe

Stir together 1 teaspoon vegetable oil 1 teaspoon oyster sauce and 1/2 teaspoon cornstarch in a bowl. Add beef and toss to coat. Marinate in the refrigerator 30 to 45 minutes. Remove from the refrigerator 10 minutes before cooking.

Stir together water 1 teaspoon cornstarch 2 tablespoons oyster sauce and pepper in a small bowl; set aside. Heat 1 tablespoon vegetable oil in a large skillet over high heat. Stir in onion and cook until it beings to brown on the edges about 1 minute. Add the beef and continue cooking and stirring until the beef is just slightly pink about 5 minutes. Pour in the sauce; cook and stir until the sauce has thickened and turned translucent about 1 minute more.