Preheat the oven to 375°F. Line a baking sheet with parchment paper or a silicone baking mat or grease and flour an 8-cavity scone pan.
Make the scones
Combine granulated sugar, baking soda, baking powder, salt, cinnamon, ginger, nutmeg and flour in a large mixing bowl. Whisk thoroughly to combine.
Add butter pieces and cut in with two knives or a pastry cutter until most butter pieces are pea sized. Add the grated carrot. Toss to coat the pieces in the dry ingredients.
In a separate bowl whisk to combine the egg, vanilla, heavy cream and carrot puree. Pour into the dry ingredients. Mix just until combined.
Slice and bake
Working quickly, dump the dough onto a floured surface. Pat into a 1-inch thick disc. Use a bench scraper or sharp knife to cut into 8 triangle segments.
Place on parchment-lined baking sheets or in the prepared scone pan. Brush with heavy cream and sprinkle with some raw sugar. Freeze at least 15 minutes before baking.
Bake for 25-30 minutes, if using a baking sheet, or 35-38 minutes if using a scone pan. Transfer to a cooling rack and let cool before glazing.
Make the glaze
In a medium bowl, combine the room temperature cream cheese and butter. Beat together with hand beaters or a whisk until combined and there are no lumps.
Add the powdered sugar and vanilla extract. Beat until combined. Add the heavy cream and beat to combine. Add more if needed.
Remove 2 tablespoons of the glaze to a small bowl and color with orange food coloring. Transfer to a piping bag with a small round piping tip. Remove 1 tablespoon of the glaze to a small bowl and color with green food coloring. Transfer to a piping bag with a small round piping tip.
Decorate
Pipe or spoon the plain white glaze onto the baked and cooled scones. Pipe little orange glaze triangle squiggles on top for the carrot base, and little sprigs of green glaze coming out of the tops.
Notes
These are best served fresh. If you serve them past the first day they are made, I recommend reheating them in the microwave for 15 seconds.I pre-cut my butter into a bit larger than pea sized to make cutting the butter in even easier and quicker.Work quickly as you do not want the butter to get too warm before baking, otherwise you risk your scones spreading flat in the oven.