In a bowl, mix the flour, oats, brown sugar, powdered milk, cinnamon, baking soda, baking powder, salt, and peach cubes until the ingredients are well combined.

In a separate bowl, use an electric mixer to blend the liquid milk, vanilla, egg white, peach juice, and vegetable oil.

Pour the wet mixture into the dry mixture and stir well until you get a smooth, consistent batter.

Pour the batter into greased muffin molds.

Preheat the oven to 180°C (350°F).

Bake the peach muffins in the preheated oven until cooked through. Then, serve.