Preheat over to 350°F. Lightly grease mini muffin tray or line with paper liners.
In a bowl, combine the whole wheat flour, oats, baking powder and soda, and cinnamon. Whisk to combine. Add the egg, oil, applesauce and brown sugar and mix until almost combined.
Add the California raisins and stir until just combined.
Using a small cookie scoop or a spoon, fill prepared muffin tins about ¾ way full.
Bake for 12 minutes or until lightly browned.
Cool before serving. Muffins keep well in the freezer for 2-3 months or in the fridge for 2-3 days.