Sugar And Spice Cupcakes

Ingredients

• 1 (15.25 ounce) box betty crocker yellow cake mix
• 1 (3.4 ounce) package instant vanilla pudding mix
• 1 tablespoon homemade pumpkin pie spice
• 3/4 cup sour cream
• 3/4 cup vegetable oil
• 1/2 cup warm water
• 4 eggs, lightly beaten
• 2 teaspoons pure vanilla extract
• 2 cups (4 sticks) unsalted butter, room temperature
• 1.5 pounds (about 5 3/4 cups) confectioners' sugar, sifted
• 1/2 teaspoon homemade pumpkin pie spice
• 2 teaspoons pure vanilla extract
• 4 tablespoons heavy cream