Preheat oven to 350 degrees
Line muffin tins with paper liners
Add the raisins to the 1/4 cup warm water to plump
In a large bowl whisk together flour, oats, sugar, salt, baking soda, and cinnamon
Chop pecans and add to the dry ingredients
Grate apples
Add the pineapple with juice to a blender and liquefy for 30 seconds
Drain the raisins
Add the wet ingredients - apples, milk, pineapple, raisins to the dry ingredients - stir together until completely combined
Scoop 1/4 to 1/3 cup of batter into muffin tins
Bake for 20 minutes or until knife inserted comes out clean