Preheat the oven to 350°F. Line an 8x8-inch pan with parchment paper.
To make the batter: In the bowl of a stand mixer, add the butter, dark brown sugar, molasses, and maple syrup. Mix on low until combined and there are no butter chunks.
Add the eggs, milk, and pumpkin puree and mix to combine.
Last, add in the flour, cinnamon, cloves, ginger, baking powder, and sea salt in that order. Mix on low until combined into a smooth cake batter. Be sure to scrape down the sides of the bowl to ensure it’s evenly mixed.
Transfer the batter to the prepared baking pan and spread it out evenly.
Bake for 35 to 40 minutes or until a toothpick inserted in the center comes out clean. If your cake seems a little domed when it comes out of the oven, then using a spatula, press it down a little bit in the middle to flatten it. If you do this when the cake is hot it will press down easily and you can get a perfectly flat cake without trimming, which really helps with the stencils. Allow the cake to cool completely in the baking pan.
Remove the cake from the pan and cut into 9 slices (3x3).
Place a stencil over the top of each piece and sift powdered sugar on top. It’s best to do each piece individually.
Serve with homemade whipped cream!