Preheat oven to 250F (120 °C). Combine popcorn and nuts in a large, shallow baking pan. Melt Golden Crisco Shortening in saucepan. Stir in sugars and syrup. Bring to a boil, stirring constantly; then boil gently on medium heat for 4-5 minutes or until golden brown. Watch Carefully ~ Mixture Burns Quickly. Don't overcook. Remove from heat; stir in vanilla and baking soda. Pour over popcorn mixture. Toss to coat popcorn thoroughly. Bake at 250F (120 °C) for 30-40 minutes, or until crisp and golden. Stir occasionally during baking. Turn out immediately onto a waxed paper-lined tray. Cool and break into pieces. Store in tightly-covered container. Do Not Refrigerate Hint: If nuts are omitted, add an extra cup of popcorn. Preparation time: 10 mins. Cooking time: 5 mins. - Baking time 40 mins. From the Crisco Shortening Holiday Recipes booklet.