This document provides a recipe for sugar glass cookies that requires 1 egg, 4.4oz sugar, 8.8oz flour, 5.2oz butter, and a pinch of salt. The instructions are to mix the egg and sugar, then add the flour, butter, and salt before refrigerating the dough for an hour. After resting, the dough is rolled out and cut into shapes before baking at 180°C and storing in an airtight container. An optional addition of cocoa powder is noted for making chocolate cookies.