Pumpkin Tres Leches Cake has a creamy rich texture and the wonderful flavor of fall spices. You are going to love this fall twist on the classic Tres Leches Cake. It's a from-scratch cake, but it's not at all difficult to make.
Place granulated sugar, pumpkin, vegetable oil, vanilla, and eggs in a large bowl. Use a hand-held electric mixer to beat until combined.
Preheat oven to 350 degrees F and spray and 9x13-inch baking dish with cooking spray.
In a medium bowl whisk together flour, baking powder, baking soda, salt, cinnamon, and pumpkin pie spice.
With mixer on LOW gradually beat dry ingredients into wet.
Pour batter into prepared baking dish. Bake for 25 to 30 minutes.Let cool 15 minutes and then poke holes all over with a fork.
In a medium bowl, whisk together half-and-half, evaporated milk, and sweetened condensed milk. Slowly pour mixture over cake.Note: It will seem like there is too much liquid but the cake will soak all of it up.
Cover with plastic wrap and refrigerate at least 3 hours.
Spread cool whip on top and sprinkle with ground cinnamon.