Pumpkin Cheesecake Cake

Preheat the oven to 350°F (175°C). In a large bowl, mix together the pumpkin puree, cream cheese, sugar, eggs, and vanilla extract until smooth. In a separate bowl, whisk together the flour, baking powder, cinnamon, nutmeg, and salt. Gradually add the dry ingredients to the pumpkin mixture, mixing well after each addition. Pour the batter into a greased and floured cake pan. Bake for 40 minutes or until a toothpick inserted into the center comes out clean. Let the cake cool in the pan for 10 minutes, then transfer it to a wire rack to cool completely. In a small saucepan, melt the butter over low heat. Remove from heat and stir in the powdered sugar and milk until smooth. Drizzle the glaze over the cooled cake. Allow the glaze to set for 1-2 hours before serving.