Preheat oven to 350°F (175°C) and line a muffin tin with paper liners.
In a large bowl, whisk together flour, baking powder, baking soda, cinnamon, nutmeg, and salt.
In another bowl, whisk eggs, then add applesauce, maple syrup, milk, and vanilla.
Pour wet ingredients into dry ingredients and stir until just combined.
Fold in grated carrots, oats, and raisins if using.
Divide batter among muffin cups and sprinkle with sunflower seeds.
Bake for 18-22 minutes until a toothpick inserted in the center comes out clean.
Let cool in the pan for 5 minutes, then transfer to a wire rack.
