Preheat oven to 350 degrees
Peel and chop 3 cups of apple (approx. 3 medium-sized apples) tossed in lemon juice; set aside (Reserve ½ cup chopped apples on the side)
Combine flour, baking powder, baking soda, salt, and 2 teaspoons of cinnamon in a large bowl.
Stir dry ingredients together to make sure the baking powder and baking soda are mixed in.
If using coconut sugar, stir into the dry ingredients.
Now add the apple sauce, vanilla extract, and oat milk. Also, add maple syrup if using instead of coconut sugar.
Stir by hand; do not use an electric mixer.
Do not over-stir; make sure all the ingredients and wet ingredients create a thick and slightly lumpy batter.
Next, gently fold the apples into the batter.
Using a silicone bread pan or a pan lined with parchment paper, pour bread batter into the pan, scraping down the bowl's sides to get all the batter.
Then, place ½ cup apples into the top of the bread and sprinkle with remaining cinnamon, randomly placing them. Again, this is just for added flavor and for aesthetics.
Cook for 50-55 minutes. If using a silicone pan, check the bread at 45 minutes since it cooks quickly.
To check to make sure the bread is cooked through, place a knife through the middle. It should come out clean. If there is batter on the blade, cook for an additional 5 minutes.