Oh yes I did!!!
I used my "go to" banana muffin recipe and swirled in nutella in each muffin!!!
1 1/2 cups all-purpose flour
1 teaspoon baking powder
1 teaspoon baking soda
1/2 teaspoon salt
3 large bananas, mashed
3/4 cup white sugar
1/3 cup butter, melted
Preheat oven to 350 degrees F (175 degrees C). Coat muffin pans with non-stick spray, or use paper liners. Sift together the flour, baking powder, baking soda, and salt; set aside.
Combine bananas, sugar, egg, and melted butter in a large bowl. Fold in flour mixture, and mix until smooth. Scoop into muffin pans. Put a teaspoon of Nutella on top of each muffin. Swirl it around with a toothpick or tip of sharp knife.
Bake in preheated oven. Bake mini muffins for 10 to 15 minutes, and large muffins for 25 to 30 minutes. Muffins will spring back when lightly tapped.