Prep the pan: Preheat your oven to 375°F (190°C). Line a 12-cup muffin tin with paper liners or grease lightly.
Whisk dry ingredients: In a large bowl, whisk the flour, baking powder, baking soda, salt, cinnamon, and nutmeg until well combined.
Combine wet ingredients: In a separate bowl, whisk the honey (or maple), brown sugar, oil, eggs, applesauce, milk, and vanilla until smooth.
Bring it together: Pour the wet mixture into the dry ingredients.
Stir gently with a spatula until just combined. The batter should be thick but scoopable. Do not overmix.
Fold in apples: Add the chopped apples (and nuts or raisins if using).
Fold until evenly distributed. A few streaks of flour are okay.
Fill the cups: Divide the batter evenly among the 12 muffin cups, filling each about 3/4 full. Sprinkle with coarse sugar if you like a lightly crisp top.
Bake: Bake for 15–18 minutes, or until a toothpick inserted in the center comes out clean or with a few moist crumbs.
Cool: Let the muffins cool in the tin for 5 minutes, then transfer to a wire rack to cool completely.
This helps prevent soggy bottoms.