The “Size of Her Head” Cookie: How One Sweet Request Inspired the Ultimate Single-Serve Treat
We’ve all been there: the late-night craving strikes, you have a vision of a gooey, golden-brown chocolate chip masterpiece, but the thought of washing a stand mixer, chilling dough for hours, and staring down a dozen leftover cookies—knowing full well you’ll eat every single one—is enough to kill the mood.
When my granddaughter Evie and I were FaceTiming recently, she requested a chocolate chip cookie “the size of her head”.
That’s when it hit me: Why make a dozen when you only need one?
Whether you’re honoring a specific request from a loved one, trying to avoid the “guilty batch” of extra cookies, or you simply believe that dessert should be an event rather than a snack, this recipe is for you. It’s the ultimate single-serve indulgence. It’s thick, it’s decadent, and yes—it’s big enough to share with a friend (though I won’t judge you if you keep it all to yourself). Cookie measures 5½ inches 😁!


Why This Recipe Works
The secret to a perfect single cookie isn’t just scaling down a recipe—it’s about the ratios. By using an egg yolk, we ensure the cookie stays rich and chewy, while the cornstarch keeps the edge crisp and the center soft.
Ingredients You’ll Need
Grab these items from your kitchen. Precision matters here, so if you have a kitchen scale, use it!
- 2 tablespoons (28 grams) salted butter, melted and cooled slightly
- 2 tablespoons (26 grams) brown sugar, packed (light or dark works)
- 1 tablespoon (13 grams) granulated sugar
- 1 large egg yolk, room temp.
- ½ teaspoon pure vanilla extract
- 7 tablespoons (56 grams) all-purpose flour
- 1 teaspoon cornstarch (your “secret weapon” for a bakery-soft texture)
- ⅛ teaspoon baking soda
- pinch of kosher salt (to balance the sweetness)
- ¼ cup (43 grams) chocolate chips
Step-by-Step Instructions
- Preheat your oven to 350°F (175°C). Line a small baking sheet with a piece of parchment paper or silicone mat.
- Whisk the flour, cornstarch, baking soda, and salt together in a medium bowl. Set aside.
- In a small bowl, combine the melted butter, brown sugar, and granulated sugar. Using a fork or a small spatula, cream them together until the mixture comes together and is smooth.
- Stir in the egg yolk and vanilla extract. Mix until fully incorporated and the batter looks glossy.
- Add the flour mixture and stir just until the flour mostly disappears. See photo↓
- Fold in most of your chocolate chips and mix just until dough comes together. Form the dough into a ball (about 1 inch thick) and place on your lined cookie sheet (dough will weigh approx. 175 grams).
- Press the remaining chocolate chips into the top of the dough for that “Instagram-worthy” look. This is optional.
- Bake for 10–12 minutes. The edges should look golden brown, but the center might still look slightly soft.
- Let the cookie cool on the baking sheet for at least 5 minutes. This allows the center to set up perfectly. Serve warm, preferably with a cold glass of milk!

Why This Giant Cookie Changes Everything
There is something inherently joyful about a cookie that requires its own dedicated parchment paper. By scaling down the ingredients, you aren’t sacrificing quality; you’re elevating the experience.
This recipe is perfect for:
- The “Zero-Self-Control” Baker: If you can’t trust yourself around a cooling rack of a dozen cookies, this is your safety net.
- Spontaneous Dates: It’s the perfect “two forks, one plate” dessert.
- Spoiling…I mean, loving a Grandchild: When your granddaughter asks for a chocolate chip cookie the size of your head, you do it!
The Quick Fix: No waiting for dough to chill or worrying about freezer space.
Final Thoughts: To Share or Not to Share?
The beauty of this “head-sized” cookie lies in the freedom it gives you. It’s big enough to be a centerpiece, but small enough that you’re done with the baking process in under 30 minutes.
My granddaughter got her wish, and I got a new favorite kitchen hack. Whether you share this with a friend, a partner, or your inner child, enjoy every single bite. After all, if you’re going to bake a cookie, it might as well be an event.

What’s your favorite “single-serve” craving? Let me know in the comments below!
