Wash the raspberries and set aside so they can dry.
In a medium bowl, using a pastry blender or fork, mix together the flour, sugar, baking powder, salt, cinnamon and butter . Set aside.
In a large mixing bowl, combine the mashed bananas and the eggs. Beat after each egg is added.
Add in the milk and vanilla and mix well.
Slowly add in the dry ingredients. Mix just until everything is combined well.
Add in the one cup of chocolate chips and just mix just about five seconds. Gently add in the raspberries.
Place in lined jumbo muffin cups.
Add a few chocolate chips to the top of each muffin, if desired.
Sprinkle topping on each muffin if you are using it.
Bake at 400 degrees for 25 minutes.