Preheat the oven to 350℉. Place liners in a standard-size muffin pan, and set aside.

Mash bananas in a large mixing bowl. Then, add the pancake mix, milk, oil, eggs, brown sugar, and vanilla. Lightly mix together with a wooden spoon, until ingredients are incorporated, being careful not to over mix.

Spoon the Nutella into the mixing bowl onto the batter in 3 dollops. Then, with a bamboo skewer or knife, swirl the Nutella into the batter.

Using a scoop or tablespoon, spoon batter into the lined muffin pan, filling about ⅔ full.

Bake for 22-25 minutes or until a toothpick inserted in the center has a few moist crumbs clinging to it. Cool for 4-5 minutes before removing from the pan.

Serve warm or at room temperature. See post for tips and storage options.