Heat a pan on medium heat and melt the butter inside.
Add in the drained peaches, brown sugar, lemon juice, cinnamon, nutmeg, and salt to the melted butter.
Cook for 4-5 minutes, until the peaches develop a syrup and become caramelized.
While the peaches are cooking, pour the oat milk, maple syrup, melted coconut oil, vanilla, and egg into a large bowl. Stir well until fully combined.
Preheat your oven to 350°F.
Stir in the oats, baking powder, salt, and cinnamon to your wet mixture. The batter will be thin.
Finally, fold in the caramelized peaches and their syrup.
Spray a 9x9 baking dish with nonstick spray and pour the batter inside.
Bake at 350°F for 22 minutes, then remove and let set in the pan for another few minutes.
Serve with extra syrup, whipped cream, or ice cream. Enjoy!