Mix eggs, shortening and sugar in mixer. Sift flour, baking powder and salt. Add alternately to the first mixture along with milk and vanilla. Refrigerate for 3-4 hours (It rolls out easier) Roll out dough as thick as piecrust. Cut into 3-inch wide strips. Put filling in center and fold over dough. Cut into 1 1/2 inch bars. Bake at 350 degrees for 15 minutes. Recipe makes about 80 bars. Recipe can be cut in half.