Single Chocolate Chip Cookie Recipe
This single chocolate chip cookie recipe makes one bakery-style cookie with crisp edges, a soft center, and just 10–12 minutes of baking time.
Ingredients for One Cookie
| Ingredient | Amount | Purpose |
|---|---|---|
| Unsalted butter, softened | 1 tablespoon, about 14 g | Provides richness and helps the cookie spread |
| Light brown sugar | 1 tablespoon, about 13 g | Adds moisture and a soft, chewy texture |
| Granulated sugar | 2 teaspoons, about 8 g | Encourages browning and slightly crisp edges |
| Egg yolk | 2 teaspoons, about 10 g | Binds the dough without making a full batch |
| Vanilla extract | 1/8 teaspoon | Adds flavor |
| All-purpose flour | 3 tablespoons plus 1 teaspoon, about 27 g | Gives the cookie structure |
| Baking soda | 1/16 teaspoon, or a small pinch | Helps the cookie spread and brown |
| Fine salt | 1/16 teaspoon, or a small pinch | Balances sweetness |
| Chocolate chips or chopped chocolate | 2 tablespoons, about 20 g | Provides the chocolate filling |
The recipe uses one egg yolk rather than a whole egg because a whole egg contains too much liquid for a single cookie. To measure the yolk accurately, whisk one yolk in a small bowl and measure 2 teaspoons. The remaining yolk can be covered and refrigerated for another recipe.
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Equipment
- Small mixing bowl
- Teaspoon and tablespoon measures, or a kitchen scale
- Small baking sheet
- Parchment paper
- Cookie scoop or spoon
How to Make One Chocolate Chip Cookie
1. Heat the oven and prepare the pan
Heat the oven to 350°F (175°C). Line a small baking sheet with parchment paper. If your oven heats unevenly, use the center rack and allow the oven to preheat for at least 15 minutes.
2. Mix the butter and sugars
Put the softened butter, brown sugar, and granulated sugar in a small bowl. Stir for about 30 seconds, pressing the butter against the side of the bowl until the mixture looks smooth and creamy.
The butter should be soft enough to stir but not melted. If it is melted, the dough may spread too quickly and produce a thin cookie. If necessary, chill the mixed dough for 10 minutes before baking.
3. Add the yolk and vanilla
Stir in the measured egg yolk and vanilla until fully combined. The mixture may look slightly glossy or loose, which is normal.
4. Add the dry ingredients
Add the flour, baking soda, and salt. Stir just until no dry streaks remain. Do not continue mixing after the flour disappears, because overmixing can make the cookie firm instead of tender.
5. Add the chocolate
Fold in the chocolate chips or chopped chocolate, reserving a few pieces for the top if you want a more finished appearance. The dough should be thick enough to hold a mound when placed on the baking sheet.
6. Shape the dough
Roll or scoop the dough into one ball about 1 1/2 inches wide. Place it in the center of the prepared pan. For a thicker cookie, leave the ball tall. For a wider cookie with more crisp edge, flatten it slightly into a thick disk.
7. Bake and read the visual cues
Bake for 10–12 minutes. At 10 minutes, the edges should be lightly golden and set, while the middle should still look a little soft and puffy. At 12 minutes, the edges should be clearly browned and the center should look nearly set but not dry.
Do not judge doneness by waiting for the center to become completely firm in the oven. The cookie continues cooking on the hot baking sheet after it comes out.
8. Cool before eating
Leave the cookie on the baking sheet for 5 minutes. This allows the center to finish setting and prevents the cookie from breaking when lifted. Transfer it to a plate and eat warm or let it cool completely for a firmer texture.
Soft or Crispy: Adjust the Same Recipe
| Preferred result | Adjustment | Baking cue | Expected texture |
|---|---|---|---|
| Soft and chewy | Use all brown sugar: 1 tablespoon plus 2 teaspoons total | Bake 10–11 minutes; center remains visibly soft | Chewy middle with tender edges |
| Balanced | Use the recipe as written | Bake 10–12 minutes; edges are lightly golden | Soft center and lightly crisp rim |
| Crisper and flatter | Use 1 tablespoon granulated sugar and 2 teaspoons brown sugar; flatten dough slightly | Bake 12–13 minutes; edges are golden brown | More snap around the edges and a firmer center |
For the softest result, chill the shaped dough for 15–20 minutes before baking and remove it as soon as the edges are set. Chilling slows the spread and keeps more moisture in the center. For a crispier result, skip chilling, flatten the dough slightly, and give it the extra minute needed for deeper browning.
Why the Measurements Matter
A one-cookie recipe is less forgiving than a large batch because small measuring errors have a larger effect. For example, adding an extra teaspoon of flour can increase the flour by roughly 15 percent. That is enough to make the cookie noticeably thicker and drier. Weighing the flour at about 27 g gives the most repeatable result.
The same principle applies to the egg yolk. Two teaspoons provide enough moisture and fat to bind the flour without creating a cakey texture. Adding a whole yolk can make the dough softer and more spread-prone, while adding extra egg white can make the finished cookie firmer.
Quick Troubleshooting
The cookie spread into a thin puddle
The butter was probably too warm, the pan may have been hot, or the flour was under-measured. Chill the dough for 15 minutes before baking. If the dough still looks glossy and loose, mix in 1 teaspoon of flour, then reshape it.
The cookie stayed in a tall mound
The butter may have been too firm, or the dough may contain too much flour. Press the dough into a thick disk before baking. Next time, measure the flour by weig
Frequently asked questions
Can I make the dough ahead of time?
Yes, you can chill the shaped dough before baking. For the softest result, chill it for 15–20 minutes; chilling slows the spread and helps keep moisture in the center. If the dough seems loose, chilling it for 10 minutes is also suggested before baking.
Can I use chopped chocolate instead of chocolate chips?
Yes, the recipe allows either chocolate chips or chopped chocolate. Fold in 2 tablespoons, or about 20 g, and reserve a few pieces for the top if you want a more finished appearance.
What can I use if I don’t have a kitchen scale?
You can measure the ingredients with teaspoons and tablespoons instead. The recipe gives volume measures, including 3 tablespoons plus 1 teaspoon of flour. Weighing the flour at about 27 g gives the most repeatable result, but it is not required.
Can I make the cookie without parchment paper?
The recipe directs you to line a small baking sheet with parchment paper, but it does not specify an alternative. It also recommends using the center rack if your oven heats unevenly and allowing the oven to preheat for at least 15 minutes.
How should I store the leftover egg yolk?
Cover the remaining yolk and refrigerate it for another recipe. To measure the amount needed for this cookie, whisk one yolk in a small bowl and measure 2 teaspoons.
