Carrot Sheet Cake - Paula Deen

Ingredients

• 2 cups All-purpose flour
• 2 teaspoons baking soda
• 2 teaspoons apple pie spice
• 1 teaspoon salt, divided
• 4 large eggs
• 1 cup Vegetable oil
• 1 cup granulated sugar
• ¼ cup firmly packed light brown sugar
• 2 cups shredded carrots
• 1½ cups golden raisins
• 2 (8-ounce) packages cream cheese, softened
• ½ cup unsalted butter, softened
• 1 teaspoon vanilla extract
• 4 cups Confectioners' sugar
• chopped toasted walnuts, garmosj