Meanwhile, to make the glaze: Mix powdered sugar, cinnamon and nutmeg with 2 tbsp of milk, adding 1/2 tbsp more (1 tsp at a time) if necessary to get the consistency to the right thickness. (skinnytaste.com)
I found that slices about 1/4 thick gave me six slices per orange and were just the right thickness for the galettes. (justalittlebitofbacon.com)
If sauce is too thick, add more milk, 1 tablespoon at a time until you get the right thickness. (foodiecrush.com)