Mix the baking mix, cinnamon and sugar together in a bowl.
Stir in the milk and egg just until blended. Add additional milk 1 Tablespoon at the time, if needed to make a workable dough.
Put the dough onto a board that has been lightly floured and sprinkle with additional baking mix. Knead 3-4 times, or just enough to ensure all ingredients are well blended.
Pat dough down to about ½ inch thick and shape into a circle or disc, approximately 8 inches across.
Cut with a sharp knife or a bench scraper into 8 wedges and place the wedges on a parchment paper lined baking sheet.
Chill for at least15 minutes.
Bake 12-14 minutes at 425 degrees, or until lightly browned on edges.
If glazing, let cool 2-3 minutes before adding glaze. Serve warm.
For the Glaze
Mix all ingredients in a small bowl until well blended.
Drizzle over warm scones.
Notes
Additional baking mix or all purpose flour can be used to flour the surface and top of the dough.
Mini scones can be made by dividing dough in half and rolling each into a 5-6 inch disc and then cut into 6 wedges.
Sanding sugar or coarse sugar may be sprinkled on scones before baking.
Whole milk makes the richest scones but 2%, 1% or skim may be used.
Start with ½ cup milk and add a Tablespoon at the time until dough is a consistency you can work with.