Bring 2 cups of water to a boil and stir in the oatmeal. Return to a boil then lower the heat to a simmer. Cook until the water has been absorbed.
In a medium-sized skillet add the remaining ingredients and heat to medium-high. Cook, stirring every couple of minutes, until pears are softened and flax milk has evaporated, leaving a thick sauce around the pears, about 10 to 15 minutes.
Dish out desired amount of oatmeal and serve with the caramelized pears, raisins, and walnuts on top. Add maple syrup and additional flax milk/almond milk if desired.
Notes
*You can also use almond milk, but note that it will separate when it is brought to a boiling point.