Instructions: 1. Preheat your oven to 350°F (175°C). Grease and flour a 9x13-inch baking pan. 2. In another clean mixing bowl, beat the egg whites until soft peaks form. Gradually add the remaining 1/4 cup of granulated sugar and continue beating until stiff peaks form.
4. Bake in the preheated oven for 25 to 30 minutes, or until a toothpick inserted into the center comes out clean. 5. In a large measuring cup or bowl, whisk together the evaporated milk, sweetened condensed milk, and whole milk until well combined.
6. While the cake is still warm, use a skewer or fork to poke holes all over the surface of the cake. 7.Cover the cake and refrigerate for at least 4 hours, or preferably overnight, to allow the cake to absorb the milks.
8. Before serving, whip the heavy cream with powdered sugar and vanilla extract until stiff peaks form.
9. . Frost the Cake: Spread the whipped cream topping evenly over the chilled cake.
6. Serve: Slice and serve the Tres Leches Cake chilled. Optionally, you can garnish with fresh fruit or a sprinkle of cinnamon before serving.