Preheat your waffle iron according to the manufacturer's instructions.
Brew the coffee or espresso and allow it to cool. You can refrigerate it to speed up the cooling process.
Peel and grate the apple. Set it aside.
For the apple cinnamon waffles, in a large mixing bowl, whisk together the flour, sugar, baking powder, ground cinnamon, and salt.
In another bowl, whisk together the milk, eggs, melted butter, and vanilla extract.
Pour the wet ingredients into the dry ingredients and stir until just combined. Fold in the grated apple.
Lightly grease the waffle iron with cooking spray or melted butter.
Pour the waffle batter onto the preheated waffle iron according to the manufacturer's instructions. Cook until the waffles are golden and crispy.
Once cooked, transfer the waffles to a plate and keep them warm while preparing the latte.
For the iced salted honey latte, in a mixing jug or bowl, combine the cooled brewed coffee or espresso, milk or cream, honey, and a pinch of salt. Stir well to dissolve the honey.
Fill a glass with ice cubes.
Pour the coffee mixture over the ice cubes in the glasses.
Serve the warm apple cinnamon waffles alongside the salted honey iced latte.