📖 Instructions

1. **Prepare the Nutella Centers (Crucial First Step!):** Line a baking sheet with parchment paper or a silicone mat. Using a small spoon or a mini ice cream scoop (about 1.5 teaspoons to 1 tablespoon per dollop), scoop out roughly 24-28 dollops of Nutella onto the prepared baking sheet. Aim for roughly circular shapes. Place the baking sheet into your freezer for at least 30-45 minutes, or until the Nutella dollops are firm enough to handle without melting immediately. This step is super important for getting that gooey center in your finished cookies, so don't skip it!
2. **Preheat Oven & Prep Dry Ingredients:** While your Nutella is firming up, preheat your oven to 375°F (190°C). Grab a medium-sized bowl and whisk together your all-purpose flour, baking soda, and salt. Give it a good whisk to make sure everything is evenly combined. Set this aside for now.
3. **Cream Wet Ingredients:** In a large mixing bowl, using either a stand mixer with a paddle attachment or a hand mixer, beat the softened unsalted butter on medium speed until it’s light and creamy, about 1-2 minutes. Then, add both the granulated sugar and the packed light brown sugar. Continue beating on medium-high speed for another 2-3 minutes, scraping down the sides of the bowl as needed, until the mixture is light, fluffy, and looks almost pale yellow. This creaming process incorporates air, which helps make your cookies soft.
4. **Add Eggs and Vanilla:** Crack in one large egg and beat on medium speed until it’s just combined. Don't overmix! Then, add the second large egg and the vanilla extract, beating again until just incorporated. The mixture might look a little curdled at this point, but don't worry, it'll come together when we add the dry ingredients.
5. **Combine Wet and Dry Mixtures:** Reduce your mixer speed to low. Gradually add the dry ingredient mixture (flour, baking soda, salt) to the wet ingredients, a little at a time. Mix until just combined. You want to stop mixing as soon as you see no more streaks of dry flour; overmixing develops gluten too much, leading to tough cookies. No one wants a tough cookie, right?
6. **Fold in Chocolate Chips:** Remove the bowl from the mixer and, using a sturdy rubber spatula or wooden spoon, gently fold in the semi-sweet chocolate chips. Make sure they're evenly distributed throughout the dough.
7. **Assemble the Cookies (The Fun Part!):** This is where it gets exciting! Take your frozen Nutella dollops out of the freezer. Scoop out a generous tablespoon (about 1.5-2 tablespoons actually) of cookie dough. Flatten this dough slightly in the palm of your hand. Place one frozen Nutella dollop right in the center of the flattened dough. Carefully wrap the cookie dough around the Nutella, pinching and sealing the edges completely so the Nutella is fully enclosed. Form it into a nice, smooth ball. It's like wrapping a tiny, delicious present!
8. **Arrange on Baking Sheets:** Place the formed cookie dough balls onto your prepared baking sheets, leaving about 2 inches of space between each cookie. They will spread a bit.
9. **Bake Until Golden:** Pop the baking sheets into your preheated oven. Bake for 10-13 minutes. You’re looking for edges that are set and lightly golden brown, but the centers should still look soft and slightly underdone. This is the secret to a chewy cookie! Remember, every oven is a little different, so keep an eye on them.
10. **Cool and Enjoy:** Once baked, remove the cookies from the oven and let them cool on the baking sheet for 5-10 minutes. This allows them to set up properly without falling apart. Then, carefully transfer them to a wire rack to cool completely. Or, if you're like me, enjoy one or two while they're still warm and the Nutella is perfectly molten. Just be careful, the center can be hot!
11. **Optional (but recommended) Sprinkle of Sea Salt:** If you love that sweet and salty combo, immediately after taking the cookies out of the oven, sprinkle a tiny pinch of flaky sea salt (like Maldon) over the top of each warm cookie. The salt really brings out the chocolate and hazelnut flavors.