Prepare frying pan and turn stove heat to medium-high. Spread a thick layer of Nutella on one side of each of the breads and butter on the other side.
Place butter-side breads onto heated pan and press gently until the bottoms of the bread turn toasted and golden. Add a giant dollop of marshmallow creme to the center of half of the bread slices (on top of the Nutella). Take the other half of the slices and press on top. You can continue to heat the sandwiches in the pan until filling is melted and gooey. You can also remove from pan and place in microwave for a few seconds to really melt the filling.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.