Step 1Combine flour and sugar in bowl and stir together with fork. Cut margarine into bowl in about 4 or 5 pieces. Rub margarine into flour and sugar using your fingers until texture is consistent.
Step 2Stir in milk until dough forms. Dough should be somewhat similar to pie crust, able to be formed with hands, but still quite dry. Cover bowl with damp paper towel and rest 10 minutes.
Step 3Turn dough out onto lightly floured board and knead gently a few times, then form individual rounds, flattened between palms. Place each on greased baking sheet.
Step 4Brush tops with egg. Bake at 425 degrees until golden, 10 to 15 minutes.