In a bowl, mix flour, BP and salt
In another bowl, using balloon whisk, mix eggs, milk, sugar, vanilla, and peanut oil
Combine dry ingredients and wet ingredients, mix until just combined
Preheat oven to 400 F, grease large muffin pan
Scoop 1/4 c of batter to pan, top each with 1 tsp Nutella, then top again with another 1/4 c batter (the recipe makes 6 muffins)
Lastly, top with another 1 tsp Nutella. Using a toothpick, swirl the top Nutella, creating marble effect
Bake muffins for 15-18 mins
Cool on rack and enjoy!