Single Serve Skillet Chocolate Chip Nutella Cookie

The Science of the “Gooey Core”

The physics of a skillet cookie (or “Pizookie”) differs from a standard tray cookie due to thermal mass. The cast iron skillet retains heat longer than a baking sheet, allowing the edges to undergo a rapid Maillard reaction (becoming crispy) while the center stays shielded by the Nutella “insulator.”

By stuffing the center with Nutella, we introduce a fat-rich barrier that prevents the cookie dough from drying out. As the cookie bakes, the hazelnut fats in the Nutella migrate slightly into the surrounding dough, creating a “lava” effect that remains molten even after the cookie begins to cool.

The Essential Ingredients List

Makes 1 giant, indulgent single-serving cookie.

The Dough Base:
- 2 tbsp Unsalted Butter: Melted and slightly cooled.
- 3 tbsp Brown Sugar: (Packed) for that chewy, molasses hit.
- 1 Large Egg Yolk: (Discard the white for a richer, less “cakey” texture).
- 1/2 tsp Vanilla Extract.
The Dry Mix:
- 1/3 cup + 1 tbsp All-Purpose Flour.
- 1/8 tsp Baking Soda & a pinch of Salt.
- 2 tbsp Semi-Sweet Chocolate Chips.
The “Lava” Center:
- 1 heaping tbsp Nutella: Pre-frozen for 15 minutes for easier handling.

Timing: The “Warmth” Window

Task	Duration	Context
Mixing	5 Minutes	No mixer required; use a fork.
Baking	12–15 Minutes	At 175°C (350°F).
The “Mandatory” Rest	5 Minutes	Allows the structure to set.
Total Time	~25 Minutes	High reward for low effort.

Step-by-Step Instructions

1. The Butter-Sugar Emulsion

In a small bowl, whisk the melted butter and brown sugar until they are well combined and the sugar starts to dissolve. Whisk in the egg yolk and vanilla. Actionable Tip: If the butter is too hot, it will scramble the egg yolk—ensure it’s just warm to the touch.

2. The Dry Integration

Stir in the flour, baking soda, and salt until a soft dough forms. Fold in the chocolate chips.

3. The Nutella Stuffing

Grease a 5-inch (12cm) mini skillet or a small oven-safe ramekin.

Place 2/3 of the cookie dough into the bottom, pressing it up the sides slightly to create a “well.”
Drop the tablespoon of Nutella into the center.
Flatten the remaining 1/3 of the dough in your hands and place it over the Nutella, pinching the edges to seal the hazelnut treasure inside.

4. The Perfect Bake

Bake at 175°C (350°F) for 12–15 minutes. Insight: The edges should be set and golden brown, but the center should still look slightly “under-baked” and soft. It will continue to firm up as it rests in the hot skillet.

5. The Finishing Touch

Immediately top with a pinch of sea salt. Let it rest for 5 minutes before diving in.

Nutritional Information (Approximate)

Nutrient	Amount	Daily Value (%)
Calories	480 kcal	24%
Total Fat	26g	33%
Sugars	38g	42%
Protein	5g	10%

Common Mistakes to Avoid

Using the Whole Egg: Using the egg white adds moisture and protein that creates a “bread-like” texture. For a true, fudgy skillet cookie, the yolk only is the secret.
Over-Baking: If the center looks “done” in the oven, it will be dry by the time you eat it. The residual heat of the skillet is powerful—pull it out while it still looks a bit pale in the middle.
Forgetting the Salt: Nutella and chocolate are very sweet. A tiny sprinkle of flaky sea salt on top is necessary to “cut” the sugar and highlight the hazelnut notes.

Conclusion

This Single Serve Skillet Cookie is the ultimate late-night hack. It satisfies the craving for a full batch of cookies with zero leftovers and a molten Nutella surprise that makes it feel like a high-end restaurant dessert.