Preheat oven to 180oC. Spray 2 baking trays with oil to lightly grease. Combine flour, baking powder, minute oats, rosemary, sea salt and Bi-carb in a bowl.
Combine sugar, butter and egg in a bowl. Add to the flour mixture. Mix until combined. Knead to a firm dough.
Sprinkle a clean surface with minute oats. Turn dough onto the oats. Use a rolling pin to roll out the dough to a 3mm thick disc. Use a 5.5cm diameter round pastry cuter to cut out shapes. Place on a prepared tray. Sprinkle with sea salt. Bake for 10-12 minutes or until light and golden.