Preheat your oven to 200°C (400°F) and line a baking sheet with parchment paper.

In a large mixing bowl, whisk together the all-purpose flour, granulated sugar, baking powder, cinnamon, and salt until well blended.

In a separate bowl, beat the egg and then add the milk and vanilla extract. Stir until fully combined.

Pour the wet mixture into the bowl of dry ingredients and stir gently until just combined, leaving a few lumps.

Fold in the diced apples until evenly distributed throughout the batter.

Heat about 1 inch of vegetable oil in a skillet over medium heat until small bubbles start to form.

Drop spoonfuls of the apple fritter batter into the hot oil and fry for 2-3 minutes on each side until golden brown.

Transfer the fried fritters to the prepared baking sheet and bake for 10-12 minutes until cooked through.

Let the fritters cool slightly, then dust with powdered sugar before serving.