Heat oil to 375°F in deep pot.
Mix flour, sugar, baking powder, cinnamon, salt.
Whisk milk, eggs, melted butter together.
Combine wet and dry ingredients until mixed.
Fold diced apples into batter gently.
Drop spoonfuls of batter into hot oil.
Fry 2-3 minutes until golden brown.
Flip and fry another 2-3 minutes.
Remove with slotted spoon to rack.
Mix glaze ingredients until smooth consistency.
Drizzle warm glaze over cooled fritters.