3 Milk Cake or Tres Leches

Preheat the oven to 350 degrees F (175 degrees C). Grease and flour a 9x13-inch baking pan.

Beat egg whites in a large glass, metal, or ceramic bowl with an electric mixer until fluffy; gradually beat in sugar until soft peaks form. Gradually beat in flour, then beat in milk, egg yolks, melted butter, 4 teaspoons vanilla extract, and baking powder, thoroughly beating in each ingredient before adding the next. Pour batter into the prepared baking pan.

Bake in the preheated oven until browned and crusty on top, no more than 30 minutes. Cool cake in the pan for 10 minutes; gently remove from the pan to finish cooling.