Easy Pumpkin Pie Cake

Preheat the oven to 350 degrees F (175 degrees C). Grease two 9-inch cake pans.

Combine cake mix, pumpkin puree, water, eggs, cinnamon, nutmeg, and ginger in a bowl; beat with an electric mixer until well incorporated. Pour batter into the prepared cake pans.

Bake in the preheated oven until a toothpick inserted into the center comes out clean, 30 to 35 minutes. Cool on a wire rack for 5 minutes. Run a table knife around the edges to loosen. Invert carefully onto a serving plate or cooling rack. Let cool, about 30 minutes.

Meanwhile, combine powdered sugar, butter, Neufchatel cheese, vanilla extract, and cinnamon in a bowl; beat with a hand mixer until smooth. Fill and frost the cooled cake.