Sift together dry ingredients. Cut in Crisco shortening and peanut butter until mixture resembles coarse meal. Blend in corn syrup and milk. Shape into 1-inch roll; chill. Slice 1/8 to 1/4-inch thick. Place half the slices on an ungreased cookie sheet. Place 1/2 tsp. peanut butter on each half. Cover with remaining slices; seal edges with fork. Bake at 350 degrees for about 12 minutes. Cool slightly; remove from sheet.