To prepare a pumpkin poundcake with brown sugar walnut glaze baked goods recipe, you'll first need to prepare the cake batter. Preheat the oven to 350 degrees F (180 degrees C) and grease and flour two 8-inch round cake pans. Sift the flour, baking powder, sugar, cinnamon and salt into the bowl of an electric mixer and mix until the ingredients are well combined. Add the butter and beat the mixture until it's light and fluffy, about 2 minutes. Gradually add the milk, beating after each addition. Pour in the vanilla and the pumpkin pie spice mixture. Beat the batter until smooth.