01 -
Turn your oven on and set it to 350°F.
02 -
Follow the mix's directions on the box for combining the cake mix, oil, water, and eggs. Tip it all into a 9x13 pan and bake for 28-33 minutes.
03 -
Once out of the oven, let the cake cool a bit for 15 minutes, then prick holes everywhere with a fork. Stir together the lemonade concentrate and powdered sugar, and pour it over the warm cake.
04 -
Leave the cake to cool down completely, then pop it into the fridge for about an hour to get nice and cold.
05 -
Whip the butter and cream cheese until it’s super light and airy. Slowly mix in the powdered sugar, lemonade concentrate, and a tiny bit of salt until smooth.
06 -
Spread the frosting over the cold cake, cut it into squares, and enjoy!