01 -
Peel and dice the apples into small chunks. Preheat your oven to 350°F (180°C) or 320°F (160°C) for convection/fan ovens. Line a 12-cup muffin tin with paper liners.
02 -
In a medium bowl, whisk together the flour, sugar, cinnamon, baking powder, baking soda, and salt until well combined.
03 -
In a separate bowl, mix the yogurt, oil, egg, and vanilla extract until smooth. Pour the wet ingredients into the dry ingredients and stir just until combined - don't overmix. Gently fold in the diced apples.
04 -
Divide the batter evenly among the muffin cups, filling each about 2/3 full. Mix the cinnamon and sugar for the topping and sprinkle generously over each muffin. Bake for 20 minutes, or until a toothpick inserted in the center comes out clean. Allow to cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.