A&P Spanish Bar

FOR THE CAKE:

• 2 cups water
• 3/4 cup raisins
• 1/2 cup vegetable oil
• 2 cups all-purpose flour
• 1 cup granulated sugar
• 1 1/2 teaspoons pumpkin pie spice
• 1 teaspoon baking soda
• 1/2 teaspoon fine salt
• 1 large egg, lightly beaten
• 3/4 cup walnuts, very finely chopped (optional)

FOR THE FROSTING:

• 8 ounces cream cheese, room temperature
• 1/4 cup unsalted butter, room temperature
• 2 1/4 cups powdered sugar
• 1/4 teaspoon fine salt