Willard Scott's Red Velvet Cake

Ingredients

• 2½ cup self-rising flour
• 1½ cup vegetable oil
• 1½ cup sugar
• 1 cup buttermilk
• ¼ cup red food coloring
• 1 teaspoon baking soda
• 1 teaspoon unsweetened cocoa powder
• 1 teaspoon vanilla extract
• 1 teaspoon white vinegar
• 2 large eggs
• nonstick cooking spray
• ⅓ pound (1⅓ sticks) butter, softened
• 10 ounce cream cheese, softened
• 1½ cup chopped pecans
• 1 -pound box confectioner’s sugar