Preheat oven to 375°F. Whisk the egg, sugar and oil together in a bowl. Mix the lemon zest and all of the dry ingredients together in a separate bowl and stir with a wooden spoon until all of them are evenly dispersed throughout. Slowly add the dry ingredients into the egg, sugar and oil, and mix to create a thick dough. Add the milk and mix well.
Lightly grease a baking pan. Scoop up tablespoonfuls of the dough and drop them one by one in mounds onto the baking sheet, leaving 2 inches of space between. You should have about 10 scones. Bake for 15-20 minutes, just until the crust is barely golden brown and the dough is dry. Remove from the oven and let cool for 10 minutes. With a fork, mix the Lemon Topping ingredients until the sugar is completely incorporated. Drizzle 1 tablespoon ever each scone.
