Single Chocolate Chip Cookie Recipe

This single chocolate chip cookie recipe makes one generously sized cookie, using 30 g of dough for a chewy center or 24 g for a thinner, crisper result. You need 25 minutes, one bowl, a small baking sheet, and ordinary pantry ingredients; the key decisions are softened versus melted butter, chilling time, and bake temperature.

For the most reliable balance of crisp edges and a soft middle, use softened butter, brown sugar, 30 g of dough, and bake at 175°C (350°F) for 10–12 minutes. For a chewy cookie, remove it when the center still looks slightly underdone; for a crisp cookie, flatten the dough farther and bake it for 13–15 minutes.

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Single chocolate chip cookie recipe at a glance

Ingredients for one large cookie

The formula below makes one cookie about 8–10 cm (3–4 inches) across, depending on how much it spreads. A digital scale gives the most repeatable result, while the volume measures are useful when you do not have one.

Use a chopped chocolate bar if you want irregular melted pools, or standard semisweet chips for a more even distribution. If using salted butter, omit the added salt or reduce it to a tiny pinch.

How to make one chocolate chip cookie

1. Prepare the pan and oven

Heat the oven to 175°C (350°F), using conventional heat if possible. Line a small, light-colored metal baking sheet with parchment paper. The parchment prevents sticking, while a light metal pan reduces the risk of an overly dark underside; dark pans absorb more heat and may brown the base faster.

If your oven runs hot or uses a fan, set it to 160°C (325°F) and begin checking about two minutes earlier. Oven thermostats vary, so the visual cues are more useful than the clock alone.

2. Cream the butter and sugars

Put 15 g softened butter, 12 g brown sugar, and 8 g granulated sugar in a small bowl. Press and stir with a spoon for 30–45 seconds, until the mixture looks smooth and slightly fluffy.

Softened butter should yield when pressed but should not look oily or melted. If the butter is liquid, the dough will spread more quickly and may produce a thin cookie. If it is cold and firm, the sugar will not combine evenly and the cookie can bake up dense.

3. Add the yolk and flavoring

Stir in 8 g egg yolk and ¼ teaspoon vanilla extract, if available. The small amount of yolk matters: a whole egg adds too much liquid for this quantity and would require substantially more flour.

To measure yolk without wasting the rest of the egg, separate one egg and whisk the yolk briefly. Weigh 8 g, reserving the remainder for another recipe. If you cannot weigh it, use approximately 1½ teaspoons of beaten yolk.

4. Mix the dry ingredients

Add 25 g plain flour, 0.5 g salt, and 0.3 g baking soda. Stir only until no dry flour remains. Overmixing develops gluten and can make a small cookie tough, particularly when the dough is stirred vigorously in a narrow bowl.

The finished dough should be soft and scoopable, not runny. If it appears unusually loose because the butter was warm, chill it for 15–20 minutes before adding the chocolate or shaping it.

5. Add the chocolate and shape the dough

Fold in 15 g chocolate chips or chopped chocolate. Shape the dough according to the result you want:

• For chewy: form a compact 30 g ball and leave it fairly tall, about 12–13 mm thick. Do not flatten it much.
• For balanced texture: use about 28 g and press it to 10–12 mm thick.
• For crisp: use 24 g and flatten it to 6–8 mm thick. A wider, thinner dough disk loses moisture more quickly.

Place the dough in the center of the lined sheet, leaving at least 5 cm (2 inches) of clear space around it. Although this recipe makes one cookie, the dough can spread by several centimeters during baking.

6. Bake by appearance, not just time

Bake the chewy version at 175°C (350°F) for 10–12 minutes. It is ready when the edges are lightly golden and firm but the center still looks a little pale and soft. For a balanced cookie, bake 11–13 minutes. For the thin crisp version, bake at 180°C (350°F) for 13–15 minutes, until the center is golden.

Remove the sheet from the oven and leave the cookie in place for 8–10 minutes. This resting period is part of the bake: residual heat firms the center and allows the melted sugar and fat to set. Moving it immediately can cause a soft cookie to break.

How to adjust the texture without changing the whole recipe

For a distinctly chewy result, chilling is usually more dependable than simply reducing the bake time. A very short bake can leave the center unset rather than pleasantly chewy. For crispness, surface area and complete cooling matter as much as oven temperature.

Worked measurement and yield example

The ingredient weights total approximately 84.8 g before baking: 15 + 12 + 8 + 8 + 25 + 0.5 + 0.3 + 15 = 83.8 g, plus the optional vanilla. You can divide the mixture into one 30 g cookie and keep the remaining dough chilled for a second small cookie, or bake the full amount as one oversized cookie.

If you want exactly one 30 g cookie, the practical method is to mix the full formula, weigh out 30 g, and refrigerate the remaining dough in a sealed container for up to 48 hours. Mark the container with the date. The smaller portion will bake in roughly 10–12 minutes, while the leftover dough may need a slightly different time if shaped thinner or thicker.

Common mistakes and ownership realities

Why did the cookie spread too much?

The usual causes are melted butter, a warm baking sheet, insufficient flour, or dough placed in a hot kitchen for too long. Chill the shaped dough for 20–30 minutes and ensure the baking sheet is cool before starting. Do not add a large amount of extra flour, because that can correct spread at the cost of a dry, cakey texture.

Why is the bottom dark before the top is done?

The pan may be dark, thin, or positioned too close to the lower heating element. Move the rack to the center, use parchment, and reduce the temperature by 5–10°C if needed. A second baking sheet placed underneath can provide insulation, although it may extend the baking time slightly.

Why did the cookie become hard after cooling?

It was probably baked too long, or the dough was too small and thin for the stated time. Remember that the cookie continues cooking on the hot pan after removal. Store a cooled cookie in an airtight container; if it is intended to remain chewy, avoid leaving it uncovered, since exposed air gradually removes moisture.

Cleaning and equipment considerations

For this one-cookie formula, a spoon and small bowl are enough, so there is no need to use a stand mixer. Wash the bowl and spoon promptly before sugar and butter dry onto them. Let the baking sheet cool completely before wiping it; plunging a hot metal pan into cold water can distort it over time.

The parchment is reusable for several batches if it remains clean and flat, but discard it if it becomes brittle, heavily stained, or scorched. A digital scale is the most useful piece of equipment for single-serving baking because a difference of 2–3 g of flour is proportionally significant in such a small formula.

Frequently Asked Questions

Can I make this single chocolate chip cookie recipe without an egg?

Yes. Replace the 8 g egg yolk with 1 teaspoon of milk or cream, then add 1–2 g extra flour if the dough seems loose. The cookie will be slightly less rich and may spread differently, so chilling the shaped dough for 20 minutes is helpful.

Can I use melted butter?

Yes, but cool it until warm rather than hot before mixing. Melted butter encourages more spread, so chill the finished dough for at least 30 minutes and use the 28–30 g chewy portion rather than the thin crisp portion. The resulting cookie may have a denser, slightly fudgier center.

What flour works best?

Plain flour, also called all-purpose flour, is the best default. Bread flour can make the cookie chewier but may produce a firmer bite, while cake flour can make it more delicate and fragile. Substitute by weight rather than by volume whenever possible.

Can I bake the dough in an air fryer?

You can, but air fryers vary widely in airflow and basket size. Start at 160°C (320°F) for 7–10 minutes on parchment suitable for the appliance, checking early because the circulating air can brown the edges quickly. Keep the dough away from the heating element and allow it to cool fully before lifting it.

How should I store leftover cookie dough?

Wrap the dough tightly or place it in a sealed container and refrigerate it for up to 48 hours. For longer storage, freeze a shaped dough ball for up to one month, then bake from frozen at 175°C (350°F), adding approximately 2–4 minutes. Label the portion weight and date so the baking time remains predictable.

How do I make the cookie less sweet?

Reduce the granulated sugar from 8 g to 5 g, or use darker chocolate with a higher cocoa percentage. Do not remove all the sugar, because sugar affects spread, browning, tenderness, and moisture as well as sweetness. Adding a small pinch of flaky salt after baking can also make the flavor taste more balanced.