Teddie's Apple Cake

INGREDIENTS

• 1 cup raisins
• 1 teaspoon vanilla
• Butter for greasing pan
• 1 1/2 cup vegetable oil
• 1 teaspoon cinnamon
• 3 cups peeled, cored, and thickly sliced tart apples like Honeycrisp or Granny Smith
• 1 cup chopped walnuts
• 1 teaspoon baking soda
• 3 cups all-purpose flour, plus more for dusting pan
• 2 cups sugar
• Vanilla ice cream or whipped cream (optional)
• 3 eggs
• 1 teaspoon salt