Preheat the oven to 350 degrees F. Oil a 9x13 glass pan with oil.
In a bowl, combine the sweet potato, eggs, oil, syrup, applesauce, and vanilla together and whisk fully.
Add the remaining ingredients and mix into the wet until fully combined, leaving no streaks of flour.
Pour the prepared dish, smooth the top, and bake for 35-40 minutes, or until a toothpick comes out clean when inserted into the center. Let cool before frosting.
To make the frosting add 12 oz softened cream cheese, 1/2 cup plain full fat greek yogurt, 1/3 cup maple syrup, 2 tsp vanilla extract, juice of 1/2 an orange, and the zest from 1/2 an orange into the base of a standing mixer.
Using the mix attachment whisk until smooth. You'll need to scrape down the sides a few times.
Once the cake is fully cooled, evenly spread the cream cheese frosting on top. Slice and enjoy!