Preheat the oven to 425*. Line a 12-cup muffin tin with wrappers, or spray with cooking spray.
In a large bowl, mix mashed bananas with honey, maple syrup, vanilla extract and almond extract until smooth.
Add in Greek Yogurt, stirring until combined.
Add in the egg, stirring until combined.
Add in flour, baking powder, baking soda, salt, cinnamon, oats, and almonds, stirring gently until the mix is almost combined.
Pour in the almond milk and continue to stir the mixture until just combined.
Lastly, gently stir the blueberries into the muffins.
Spoon batter equally into the muffin tin, about 3/4 of the way full. Sprinkle with slivered almonds, if desired.
Reduce the oven temperature to 375 (preheating the oven at a high temperature helps the muffins to puff up bakery-style), and bake for about 20-22 minutes, or until a cake tester comes out clean.
Enjoy warm, cold, or at room temp!