Preheated 250 ° oven. In 15 x 10 x 2 inch baking pan melt butter and peanut butter in oven. Remove. Stir in Worcestershire, salt and garlic powder: mix well. Gradually add cereal and nuts, stirring until all pieces are evenly coated. Bake 1 hour, stirring every 15 minutes. Add candy, mixing well. Spread on absorbent paper to cool. Store in air tight container. Microwave Directions*: In 3 1/2 quart bowl or 13 x 9 x 2 inch microwave-safe dish melt butter and peanut butter on High 1 minute. Stir in Worcestershire, salt and garlic powder; mix well. Gradually add cereal and nuts, stirring until all pieces are evenly coated. Microwave on High 5 to 6 minutes, stirring every 1 1/2 minutes. Add candy, mixing well. Spread on absorbent paper to cool. Store in air tight container. *A 650 watt microwave was used. For other wattage ovens, time may need to be adjusted.