preheat oven to 350, lightly grease 8 inch square pan

in large combine flour, powder, salt and sugar

in small bowl cream together shortening, egg, vanilla and milk

add to dry ingredients and mix well

in small bowl combine all ingredients for filling and mix with fork

spread 1/2 cake batter into bottom of greased pan

pour 1/2 of filling on top and spread evenly

spread remaining cake batter on top of layer of filling

top with remaining filling

bake for 25-30 minutes (check to be sure that tooth pick inserted in middle comes out clean!  Otherwise it will be "goopy" in the middle! :))