Preparation Steps

• Preheat the oven to 350°F (175°C). Grease a 9x13 inch cake pan.
• In a large bowl, cream together the granulated sugar and softened butter until light and fluffy.
• Add the eggs one at a time, beating well with each addition.
• In a separate bowl, mix together the flour, baking powder, baking soda, and salt.
• Gradually add the dry mixture to the creamed mixture alternately with the buttermilk, starting and ending with the dry ingredients.
• Stir in the key lime juice, key lime zest, and vanilla extract until just combined.
• Pour the batter into the prepared cake pan and bake for 30-35 minutes or until a toothpick inserted into the center comes out clean.
• While the cake is baking, prepare the glaze by mixing together confectioners' sugar and key lime juice until smooth.
• Let the cake cool in the pan for 10 minutes before poking holes all over the cake with a skewer and pouring the glaze evenly over the top.
• Allow the cake to cool completely in the pan before slicing and serving.