step one, Prepare the Ingredients

1. Measure all ingredients precisely using a kitchen scale. Ensure the eggs, milk, and oil are at room temperature for a smooth batter. Preheat the oven to 410°F (210°C) and line a muffin tin with paper liners.

step two, Mix the Dry Ingredients

1. In a large bowl, whisk together 240 grams all-purpose flour, 180 grams granulated sugar, and 6 grams baking powder until well combined. This ensures an even distribution of the leavening agent for a consistent rise.

step three, Combine the Wet Ingredients

1. In a separate bowl, whisk 3 eggs, 96 grams oil, and 96 grams milk until smooth. The eggs provide structure, while the oil and milk keep the Nutella muffins moist and tender.

step four, Create the Batter

1. Slowly add the wet ingredients to the dry ingredients, mixing gently with a spatula or whisk until just combined. Avoid overmixing, as this can lead to dense muffins.

step five, Fold in the Chocolate Chips

1. Fold 270 grams of chocolate chips into the batter, ensuring even distribution. This step enhances the chocolatey goodness in these Nutella chocolate chip muffins.

step six, Fill the Muffin Cups

1. Divide the batter evenly among the muffin liners, filling them nearly to the top to create tall, bakery-style muffins. If reserved, sprinkle extra chocolate chips on top.

step seven, Bake at High Temperature (First Stage)

1. Bake in the preheated oven at 410°F (210°C) for 13 minutes. This high heat causes an initial rapid rise, forming tall, domed muffin tops.

step eight, Lower the Temperature (Second Stage)

1. Without opening the oven, reduce the temperature to 340°F (170°C) and continue baking for 5-8 minutes. This allows the centers to cook through without burning the edges, resulting in a soft, moist crumb.

step nine, Cool the Muffins

1. Once baked, remove the muffins from the oven and let them cool in the pan for about 5 minutes before transferring them to a wire rack to cool completely.

step ten, Fill with Nutella

1. Once the muffins are completely cool, use a piping bag fitted with a round tip to inject Nutella into the center of each muffin. Insert the tip into the top of the muffin and gently squeeze until filled.