1. Melt oil and butter together over low heat.
2. Add worcestershire sauce, garlic salt, paprika and cayenne pepper to butter/oil mixture.
3. Combine Nutri-Grain and mixed nuts and spread evenly into a large baking dish.
4. Pour butter/oil mixture over Nutri-Grain and nuts and bake in a slow oven (125ºC) for approximately one hour, turning every 15 minutes with an egg slice.
5. Allow to cool before serving.
6. Store in an airtight container.