Preheat oven to 350°.
Start by making your flax egg: combine flaxseed meal and water together in a small dish, stir, then wait a few minutes for the "egg" to form.
In a large bowl, combine flour, sugar, baking powder, and salt; then, cut in the cold butter and use a pastry blender or your hands to mix them together (this should take 1-2 mins).
Next, add flax egg, melted butter, milk, and vanilla to that bowl and stir to combine. Last, stir in the chopped apples. The dough should be sticky!
Flour a flat surface then place dough on that surface and use your hands to form it into a 1" thick circle. Use a floured knife to cut dough into 8 scones, then place them on a baking sheet about 2 inches apart. Brush scones with a little melted butter then bake scones for 20-25 minutes.
While scones are baking, make the cranberry glaze: combine cranberries, water and sugar in a saucepan over high heat. Bring mixture to a boil, then reduce to a simmer and simmer for 10 minutes, using a wooden spoon to help break down the cranberries.
Pour mixture through a fine mesh strainer and discard the smashed cranberries. Pour 2 tbsp cranberry syrup into a bowl, then add the powdered sugar and whisk to combine (either by hand or with an electric mixer).
Once scones are done and have cooled for a few minutes, drizzle the glaze over top.