Warm-up milk and soak raisins. Peel and grate carrots.
Combine all dry ingredients in one bowl.
Blend milk with raisins in a blender together with all other wet ingredients.
Pour wet ingredients into a bowl with dry ingredients and add grated carrots. Using a whisk mix everything together to combine just enough so there is no wet chunks left.
Use muffin cups - paper or silicone cups - and fill all 12 of them with the batter. You can also grease the muffin tray, but they will not be fat-free then.
Bake at 180°C for 45 minutes.