Heat oven to 350 F. Combine oats, flour, brown sugar and margarine; mix until crumbly. Reserve 1 cup for topping; set aside. Press remaining oat mixture onto bottom of ungreased 8 or 9-inch square baking pan. Bake 13 to 15 minutes or until light golden brown. Cool slightly. In medium bowl, combine remaining ingredients; mix gently. Spread over crust. Sprinkle with reserved oat mixture, patting gently. Bake 20 to 22 minutes or until light golden brown. Cool completely; cut into bars. Store tightly covered. Nutrition Information (1 bar): * Calories 190 * Fat 9 g * Sodium 110 mg * Dietary Fiber 1 g