The best muffins you will ever make

Today I needed to make something for a party.  Today I had bananas that needed to be eaten.  Today I had both Nutella and cream cheese available.  Today I invented an amazing muffin: the Banana Muffin With Nutella Cream Cheese Filling.

Sounds simple, right?  Phenomenal.  I already knew Nutella and cream cheese is a fantastic combination, but little did I know how yummy it would be combined with banana bread!  
When you make these (that is a when, not an if by the way), please do not neglect the crumble topping!  That topping adds a little crunch that just sets everything else off.
I am sorry I do not have more pictures, but this just means you will have to make them and see for yourself how good they are!
This recipe is a combination of 3 different recipes, so although bits and pieces in and of themselves are not mine, the effect together as a whole is :)

Muffin batter:
4 Large bananas, mashed
1 cup white sugar
2 slightly beaten eggs
2/3 cup melted butter
2 teaspoon baking soda
2 teaspoon baking powder
1 teaspoon salt
3 cups flour

For the filling:
8 ounces, weight Cream Cheese, softened 
½ cups Nutella

For the topping:
½ cup sugar
5 tablespoons flour
1½ teaspoons ground cinnamon
4 tablespoons cold unsalted butter, cut into pieces

Mix wet ingredients of batter together.  Mix dry ingredients together.  Combine ingredients - do not over mix.  Blend cream cheese and Nutella together.  Fill muffin cups 1/3 full of batter, drop small spoonful of filling in, then fill rest of cup normally.  Topping should be cut together until crumbly and then sprinkled on top.  Bake at 350 for approximately 17-20 minutes (ovens differ slightly, so just keep your eye on them).  Makes approximately 24 muffins (depending on how liberal you are when you fill your cups that could stretch to 28 or so).
Enjoy!