Making Tres Leches Cake is straightforward if you follow these steps carefully:

1. Preheat Oven: Start by preheating your oven to 350°F (175°C). Grease and flour a 9×13-inch baking dish.
2. Combine Dry Ingredients: In a bowl, sift together the flour, baking powder, and salt. Set aside.
3. Whip Egg Yolks: In a large bowl, beat the egg yolks and granulated sugar until thick and pale. Mix in milk and vanilla extract until just combined.
4. Add Flour Mixture: Gradually fold the dry ingredients into the egg yolk mixture until smooth.
5. Beat Egg Whites: In a separate bowl, beat the egg whites until soft peaks form. Gently fold the egg whites into the batter, being careful not to deflate them.
6. Bake the Cake: Pour the batter into the prepared baking dish. Bake for 30-35 minutes, or until a toothpick inserted comes out clean.
7. Cool the Cake: Once baked, let the cake cool in the pan for about an hour.
8. Prepare Tres Leches Mixture: In a bowl, whisk together the sweetened condensed milk, evaporated milk, and heavy cream.
9. Soak the Cake: Use a fork to poke holes all over the cooled cake. Slowly pour the milk mixture over the cake, allowing it to soak for at least 2 hours (ideal if left overnight).
10. Make the Topping: In a bowl, beat the heavy whipping cream and powdered sugar until soft peaks form.
11. Frost the Cake: Spread the whipped cream over the soaked cake. Add slices of fresh fruit on top if desired.

By following these straightforward steps, you’ll create a Tres Leches Cake that’s not only delicious but also visually stunning!