You may substitute 1- half c crisped rice for 1- half c of the oats. Preheat the oven to 180ºC . Coat the inside of a glass 9x12 baking dish with light vegetable oil. In a large bowl, combine the sugar, corn syrup, vegetable margarine, peanut butter and vanilla extract, and stir well to the consistency of a paste. Stir in remaining ingredients and work the mixture so that several large clumps adhere together. Using your fingers, press the mixture into the baking dish. Bake at 180ºC or 15-20 minutes until the preparation turns golden brown. Allow to cool completely before cutting into bars.