Preparation Steps

• Preheat oven to 350°F (175°C). Grease and flour a 9x13 inch baking pan.
• In a large bowl, cream together the butter and sugars until light and fluffy.
• Beat in the eggs one at a time, then stir in the vanilla.
• In a separate bowl, whisk together the flour, baking powder, baking soda, and salt.
• Gradually add the dry ingredients to the wet ingredients, alternating with the buttermilk and rum, beginning and ending with the dry ingredients. Mix until just combined.
• Pour batter into the prepared pan and bake for 45-50 minutes, or until a wooden skewer inserted into the center comes out clean.
• Let cool in the pan for 10 minutes before inverting onto a wire rack to cool completely.