Created by Luvcookn on June 8, 2020
Step 1: Preheat the oven to 350 degrees; place muffin liners in a 12 cup muffin tin.
Step 2: To make the oat flour, place 1 1/2 cups rolled oats in a food processor and process until it is very fine; and measure to make sure you have enough. (Note: Do NOT try this with steel cut oats, as they are a very different texture from rolled oats!)
Step 3: In a medium bowl, whisk together the oat flour, oats, nutmeg, cinnamon, allspice, baking powder, and kosher salt.
Step 4: In another bowl, mix together the milk, egg, maple syrup, and vanilla, then gradually whisk in the oil.
Step 5: Mix the wet ingredients into the dry ingredients until smooth.
Step 6: Allow to sit for 10 minutes while the oats re-hydrate.
Step 7: Meanwhile, dice the apple; after 10 minutes, gently fold in the apples to the batter.
Step 8: Then use a 1/4 cup measure to spoon the batter into the prepared muffin tin.
Step 9: Bake for 20 to 25 minutes until puffed and golden.