Cream Cheese Glaze:
Whisk together 8 ounces room temperature cream cheese (diary or non-dairy) + 6-8 Tablespoons unsweetened apple cider or juice until completely smooth.
Apple Cider Powdered Sugar Glaze:
Whisk together 1 cup powdered sugar (sifted), 1 Tablespoon melted unsalted butter or melted coconut butter, a pinch of salt and 1-2 Tablespoons apple cider or juice until completely smooth.
To make this vegan you need to swap out the eggs. I tried aquafaba and it turned out great - it didn't rise as high, but it was still great. 9 Tbs canned chickpea liquid whipped with ¼ teaspoon cream of tartar until it looks like clouds of meringue. Fold into batter after the wet and dry mixes have been combined. Bake for the same amount of time.
To make this gluten-free, swap in 3 cups of your favorite GF flour blend, such as King Arthur, Jovial or Bob's Red Mill. If the product does not contain xanthan gum, I would add 1 teaspoon.