Heat the oven to 190 C (374F).
Grease the silicone muffin tin with a little olive oil.
In a bowl, add the apple cubes, cinnamon, honey and lemon juice. Mix and leave the bowl aside.
In another bowl, mix the dry ingredients, flour, bran, almond flour, baking soda, nutmeg and salt.
In a third bowl, mix the liquid ingredients, applesauce, oil, egg whites, sugar and vanilla. Mix well until you get a homogeneous, slightly foamy mixture, using a hand mixer.
Add the dry ingredients to the liquid ones as well as the apple mixture and mix slowly using a spatula, until you get a soft batter.
Fill the muffin tins with the batter, sprinkle each one with granola and put in the oven for 35-40 minutes, or until they turn brown and pass the toothpick test.