Ingredients
1 ½ cups all-purpose flour
1 teaspoon baking powder
½ cup unsalted butter
1 cup white sugar
5 eggs
½ teaspoon vanilla extract
2 cups whole milk
1 (14 ounce) can sweetened condensed milk
1 (12 fluid ounce) can evaporated milk
1 ½ cups heavy whipping cream
1 cup white sugar
1 teaspoon vanilla extract


Directions
Preheat the oven to 350 degrees F (175 degrees C). Grease and flour a 9x13-inch baking pan.
Sift flour and baking powder together; set aside.
Beat sugar and butter together in a large bowl with an electric mixer until light and fluffy. Add eggs and vanilla; beat well. Add flour mixture, about 1/2 cup at a time, mixing until well blended. Pour batter into the prepared pan.
Bake in the preheated oven until a toothpick inserted into the center comes out clean, about 30 minutes. Pierce cake all over with a fork; let cool to room temperature.
Mix whole milk, condensed milk, and evaporated milk together in a bowl; pour over the top of the cooled cake and allow to soak in.
Whip cream, remaining 1 cup of sugar, and 1 teaspoon vanilla in a chilled glass or metal bowl with an electric mixer until thick. Spread over the top of the filling. Keep cake refrigerated until serving.
https://www.allrecipes.com/recipe/7399/tres-leches-milk-cake/