Ingredients
Method
- In a microwave-safe mug, melt the softened butter (about 20 seconds).
- Stir in granulated sugar, brown sugar, vanilla, and salt until smooth.
- Whisk in the egg yolk until fully incorporated.
- Add flour and mix until a thick dough forms.
- Fold in chocolate chips.
- Microwave on high for 50–60 seconds, watching carefully to avoid overflow.
- Let rest for 1–2 minutes; enjoy directly from the mug or transfer to a plate.
Notes
Use dairy-free butter and vegan chocolate chips for a vegan-friendly version.
Stir in a pinch of cinnamon or a drop of peppermint extract for seasonal twists.
Best enjoyed warm; cookie will firm up as it cools.
Prepare ingredients in advance to streamline the process during late-night cravings.