Heat the oven to 400°F and line a baking sheet.
Whisk the flours, sugar, baking powder, spices, and salt; cut in the cold butter.
Whisk milk, egg, and vanilla, then stir into the dry ingredients and fold in the apple.
Drop 1/4-cup portions onto the sheet.
Bake 11 to 13 minutes until golden and set, then turn the oven to broil.
Whisk the glaze, brush it over the fritters, and broil 2 to 4 minutes until bubbling.
Brush with the remaining glaze and cool briefly.
Let the glaze set and serve.