Lightly coat twelve 2-1/2-inch muffin cups with cooking spray; set aside.
In a medium mixing bowl, stir together eggs, mashed bananas, and milk.
In another bowl, stir together oats, whole-wheat flour, oat bran, baking powder, cinnamon, nutmeg, and cloves. Stir in raisins. Make a well in the center.
Add banana mixture to the dry ingredients all at once. Stir until just moistened. Spoon batter into prepared muffin cups, filling each cup almost full.
Bake in a 400 degree F oven for 20 to 25 minutes or until golden. Cool in the muffin cups on a wire rack for 5 minutes. Remove from the muffin cups; serve warm. Makes 12 muffins.