tres leche cake

1 box white/vanilla cake mix (to make one 9x13 in cake)
eggs/oil/milk as required by the cake mix

2 cups (1 pint) whole milk
1 14 oz can sweetened condensed milk
1 12 oz can evaporated milk

2 tbsp sugar (or to taste)
1 pint heavy whipping cream

Follow directions of the box mix and make a 9x13 inch vanilla cake. Cool for 10 mins and then poke with lots of holes and add milk mixture. For milk mixture combine whole milk, sweetened condensed milk and evaporated milk, stir well (the sweetened condensed milk takes a few stirs to incorporate) and pour over the cake, and put cake in the fridge overnight. Whip the heavy whipping cream and sugar to form whipped cream and frost the cake before serving. Store in the fridge.

adapted from various recipes on allrecipes.com