Preheat your oven to 325 degrees.
Grease a 9x13 baking dish and arrange the nectarines in an even layer on the bottom of the dish.
In a large bowl, mix together the rolled oats, brown sugar, baking powder, cinnamon, and salt.
In a medium bowl, whisk together the milk, eggs, melted coconut oil, and vanilla.
Fold the wet ingredients into the dry ingredients.
Pour over the nectarines and bake for 45 minutes.
Serve warm with a little bit of milk poured over the top.
To Freeze: Prepare to the point of baking and cover with 2-3 layers of aluminum foil. Label and freeze for up to 3 months. Defrost in the refrigerator overnight and bake as directed, adding 10-15 minutes to the cook time.