1Cut tomatoes crosswise into 1/2-inch-thick slices; cut slices into quarters; set aside.
2In large skillet, heat oil over medium-high heat.
3Add steak; cook until browned, about 5 minutes. Turn; cook until browned and medium-rare, 5 to 7 minutes.
4Remove to platter; cover loosely with aluminum foil.
5To skillet add broccoli, mushrooms, green onions and garlic; cook covered, over medium heat, stirring occasionally, until just tender, about 5 minutes.
6Whisk together oyster sauce, 1/4 cup water, ginger and cornstarch. Add to vegetables in skillet; cook and stir until sauce thickens.
7Stir in snow peas; cover and remove from heat.
8Meanwhile, thinly slice steak across grain; cut slices into quarters. To skillet, add steak with any drippings and reserved tomatoes; cook stirring constantly, just until heated through.
9Serve over steamed rice or fried noodles, if desired.
Source: Family Features