Cube sirloin into bite size pieces. Brown steak in a skillet with about 1 tablespoon of olive oil; Drain and set aside.
Place chopped onions, celery and carrots in a small saucepan; add water just to cover. Heat to boiling and boil just unitil vegetables are crisp-tender; drain and set aside.
Melt butter in a dutch oven over medium heat. Stir in flour and blend until smooth. Gradually stir in 1 quart of water plus 1/2 cup of wine. Cook, stirring unitl hot, smooth and thickened. Stir in seasoned salt, pepper, beef base and tomatoes. Cook 1 minute, stirring constantly. Stir in browning sauce, frozen mixed vegetables, cooked vegetables, remaining wine and browned meat. Cover and cook over medium heat 30 minutes stirring occasionnally.
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Lynn's Plaza III Steak Soup recipe