Line each spot of a 6 count jumbo muffin tray with jumbo baking liners. Spray the liners with non-stick cooking spray.
In a nonstick skillet saute the diced apple, grapeseed oil, and 1 tablespoon of brown sugar over medium heat. Stir frequently and adjust the heat to prevent burning. Sauté just until the apples are tender, but not mushy, about 4-5 minutes.
Place the sautéed apples into a bowl, along with any pan juices. Add in the oats, raisins, cinnamon, and remaining brown sugar. Stir to combine. Evenly distribute the apple mixture between the 6 muffin cups.
In a separate bowl combine the almond milk, beaten egg, pinch of salt, and baking powder. Whisk until well combined. Pour the mixture evenly into the muffin cups.
Bake for 40 minutes. Allow to rest for 5 minutes before serving.
Recipe by Go Dairy Free at https://www.godairyfree.org/?p=197047