Peel, core, and chop the apples into small cubes, then set them aside. In a large bowl, whisk all the dry ingredients together until combined. In another bowl, whisk together all the wet ingredients until combined.
Make a well in the dry ingredients, then pour in the wet ingredients. Fold to combine, the batter will be thick and lumpy. This is okay, as it'll help keep the apples in place when frying. Fold the apples into the batter until they are fully coated.
Pour enough oil to a heavy-based pan or saucepan to reach a depth of about 2 inches. Heat the oil over medium-high heat until it reaches 180°C (350°F). You can also check if the oil is hot enough by dropping in an apple cube. If it sizzles and bubbles around the apple, then the oil is ready.
Working in batches of 3 or 4, scoop a generous amount of batter with one spoon and use another spoon to scrape it carefully into the oil. The moment the batter touches the oil, use a spoon to spread it out a little. I regularly flip them once they hold their shape to prevent the fritters from becoming too dark. The fritters will take approximately 4 to 6 minutes to fry. Transfer the fried fritters onto a cooling rack.
Maple Glaze - In a large bowl, place in the icing sugar, maple syrup, vanilla extract, and 1 tbsp of milk. Mix until you get the desired consistency. Adjust your glaze consistency by adding a little more icing sugar if it's too runny, or a little more milk if it's too thick. I prefer the glaze to be a little thin and less sweet. Drizzle the glaze over the fritters using a whisk or spoon. When the glaze sets, turn the fritters and drizzle the other side.