Whisk together flour, sugar, baking powder, salt, nutmeg and cinnamon in a large bowl.
Fold in the eggs, oat milk, and plant-based yogurt until just combined, then fold in the diced apples.
Heat 1 inch of neutral oil in a deep skillet over medium heat. Drop 1-2 tbsp size portions of batter into the hot oil. Fry for 3 minutes per side until deep golden brown. Transfer to a wire rack.
Whisk powdered sugar, oat milk, and vanilla until smooth. Dip fritters directly into the glaze and set on a wire rack to set.
