In a medium saucepan, add rolled oats, grated carrot, and diced apple. Pour in milk and water. Add maple syrup, cinnamon, and vanilla extract. Stir well to combine.

Place the saucepan over medium heat and bring to a gentle simmer, stirring occasionally.

Once simmering, reduce heat to medium-low and cook for 6-7 minutes, stirring occasionally until the oatmeal thickens.

Remove from heat, let sit for a minute, and spoon into bowls. Add optional toppings as desired.