Peel and chop your apples into small cubes.
In a small skillet or saucepan, melt 1 tablespoon of butter.
Pour in your peeled apples, cinnamon, and nutmeg.
Cook for 5 minutes, stirring once or twice, until apples have softened.
Remove the apples from heat and set aside.
Preheat the oven to 350°F.
In a large bowl, whisk together your oat milk, maple syrup, coconut oil, vanilla extract, and egg until fully combined.
Pour in the quick oats, baking powder, salt, cinnamon, nutmeg, and allspice. Stir well.
Finally, fold in your softened apples and chopped nuts.
Add the batter to a 9x9 baking pan prepared with nonstick spray.
Bake at 350°F for 22 minutes, then let cool for a few minutes until set.
Slice and enjoy! Serve with whipped Greek yogurt or whipped cream and extra maple syrup on top.