Preheat the oven to 350°F. Cream together the shortening and granulated sugar in a large mixing bowl. In a small bowl, combine the flour, baking powder, and ½ teaspoon of the salt. Add this mixture, alternately with the milk, to the creamed mixture. Pour into an ungreased 8 by 8-inch pan. Mix the brown sugar, cocoa powder, and the remaining ¼ teaspoon of salt in a small bowl, sprinkle the mixture over the batter, then pour the boiling water over the batter. Bake until the cake is set, 45 to 50 minutes.
Recipe by Amish 365 at https://www.amish365.com/baked-chocolate-fudge-pudding/