Combine all cake ingredients and mix until smooth.
Pour into a 9x13-inch baking dish and bake at 350°F for 34 minutes, following the instructions on the back of the cake mix box.
Whisk together the tres leches mixture ingredients and pour evenly over the cooled cake.
Let the cake absorb the milk mixture completely.
Refrigerate for several hours or overnight.
Whip together the topping ingredients until light and fluffy.
Spread the topping over the chilled cake.
Garnish with cinnamon sticks, star anise, and a sprinkle of cinnamon or pumpkin spice.
Slice into 12 pieces and enjoy.
