
These are deliberately very moist (and moister than regular muffins) to ensure they are easy for baby to chew and swallow, so expect that from the interior. If you'd like to make them sweeter for older kiddos, add 1/4 cup sugar to the batter.
Preheat oven to 375 degree F and grease a 24 cup mini muffin pan with nonstick spray.
Place the banana, apple, carrot, milk, butter, egg, and vanilla into a medium bowl. Stir together.
Gently, but thoroughly, stir in the flour, oats, cinnamon, baking powder, baking soda, and salt.
Divide batter among the prepared muffin pan, filling each cup to the edge. (You'll use about 2 tablespoons batter in each mini muffin cup).
Bake for 16-20 minutes or until a cake tester inserted into the center comes out cleanly. (I do 18 minutes in my oven.)
Let cool for a few minutes in the pan, then transfer to a wire rack to cool fully. Dice up to serve to a baby eating finger foods or offer one whole to a baby eating baby led weaning-style foods.