01 -
Preheat the oven to 350℉ (175℃). Lightly butter a 9x13 pan. Set aside.
02 -
In a medium mixing bowl, whisk together all-purpose flour, baking powder, and kosher salt. Set aside.
03 -
With an electric mixer, combine sugar, eggs, and vanilla extract on high speed until light and airy, about 5 minutes.
04 -
Add half of the dry ingredients to the wet mixture, mixing on low speed until just incorporated. Gradually pour in the whole milk, followed by the remaining dry ingredients, mixing on low until combined.
05 -
Pour the batter into the prepared pan and bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean. Cool the cake completely.
06 -
In a large mixing bowl or liquid measuring cup, combine the sweetened condensed milk, evaporated milk, and heavy whipping cream.
07 -
Poke holes all over the cooled cake. Slowly pour the milk mixture over the cake, ensuring it seeps evenly. Cover and refrigerate for at least 4 hours or overnight.
08 -
With a hand mixer, whip the heavy whipping cream and powdered sugar until stiff peaks form.
09 -
Spread the whipped cream over the chilled cake and garnish with cinnamon, if desired.