In a large bowl, cut shortening into flour until crumbly. In a small bowl, beat egg; add buttermilk. Stir into flour mixture just until moistened. Turn onto a lightly floured surface; knead three to four times. Roll out to 1/2-in. thickness; cut with a 3-in. round biscuit cutter. Place on a lightly greased baking sheet.
Bake at 400° for 15-18 minutes or until lightly browned; cool slightly.
Split biscuits lengthwise; place the bottom halves on serving plates. Top with about 1/3 cup strawberries and whipped cream. Replace biscuit tops; spoon about 1/3 cup strawberries and more whipped cream on top. Serve immediately.
As a substitute for each cup of self-rising flour, place 1-1/2 teaspoons baking powder and 1/2 teaspoon salt in a measuring cup. Add all-purpose flour to measure 1 cup.