Preheat oven to 350 degrees F.
Line 12 muffin cups with liners and spray the inside of the liners with avocado oil spray or non-stick spray of choice.
Core and dice the apples and set aside.
Whisk together oat flour, almond flour, salt, baking soda and all the spices in a large bowl.
Add in diced apples and toss to coat.
In a second large bowl, mix together the eggs, honey, vanilla extract, milk, oil, and apple cider vinegar until well combined.
Add the dry ingredients to the wet ingredients and stir until just combined.
Divide batter evenly between 12 muffin cups, filling almost to the top.
Bake for 18-20 minutes or until toothpick inserted comes out clean.
Remove muffins from oven and allow to cool for 10 minutes, then place on wire rack to finish cooling.