Cookie in a Mug Recipe
Introduction
This Cookie In A Mug recipe is a quick and delightful way to satisfy your sweet tooth without baking a whole batch. Ready in just a few minutes, it’s perfect for those moments when you crave warm, gooey cookie goodness all on your own.

Ingredients
- 1 tablespoon unsalted butter
- 1 tablespoon granulated sugar
- 1 tablespoon packed light brown sugar
- 1/8 teaspoon vanilla extract
- 1 egg yolk
- 3 tablespoons all-purpose flour
- 1 1/2 tablespoons semisweet chocolate chips (plus more for topping)
Instructions
- Step 1: Place the unsalted butter in an 8-ounce microwave-safe mug. Microwave on high for about 30 seconds until the butter is fully melted.
- Step 2: Stir in the granulated sugar, light brown sugar, and vanilla extract until the mixture is smooth. Add the egg yolk and mix well to combine.
- Step 3: Add the all-purpose flour and semisweet chocolate chips to the mug, stirring until evenly distributed. Sprinkle a few extra chocolate chips on top for added texture.
- Step 4: Microwave on high for 45 to 60 seconds, until the cookie puffs slightly and appears set but still soft in the center.
- Step 5: Let the cookie cool for about 1 minute before enjoying. Be careful as the mug may be hot.
Tips & Variations
- Use room temperature egg yolk to help the dough mix more evenly.
- Swap semisweet chocolate chips for white or milk chocolate for a different flavor.
- Add a pinch of sea salt on top before microwaving to enhance the chocolate taste.
- If you prefer a chewier texture, reduce microwave time slightly.
Storage
This cookie is best enjoyed immediately for the warm, gooey texture. If you have leftovers, store them in an airtight container at room temperature for up to one day. Reheat briefly in the microwave (about 10 seconds) to regain softness, but be careful not to overcook.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use a whole egg instead of just the yolk?
Using only the yolk helps achieve a richer, more tender texture. Adding the whole egg may make the cookie more cakey and change the consistency.
What if my cookie turns out dry or overcooked?
Microwave power varies, so try shortening the cooking time by 5-10 seconds next time. The cookie should be soft and slightly gooey in the center when done.
PrintCookie in a Mug Recipe
This Cookie In A Mug recipe offers a quick and easy way to satisfy your cookie cravings in just minutes. Perfect for a single serving dessert, it combines buttery sweetness, rich chocolate chips, and a soft, slightly gooey texture, all made effortlessly in your microwave.
- Prep Time: 3 minutes
- Cook Time: 1 minute
- Total Time: 4 minutes
- Yield: 1 serving 1x
- Category: Dessert
- Method: Microwaving
- Cuisine: American
Ingredients
Basic Ingredients
- 1 tablespoon unsalted butter
- 1 tablespoon granulated sugar
- 1 tablespoon packed light brown sugar
- 1/8 teaspoon vanilla extract
- 1 egg yolk
- 3 tablespoons all-purpose flour
- 1 1/2 tablespoons semisweet chocolate chips (plus more for topping)
Instructions
- Melt Butter: Place the unsalted butter in an 8-ounce microwave-safe mug. Microwave on high for about 30 seconds until the butter is fully melted.
- Mix Ingredients: Stir the granulated sugar, light brown sugar, and vanilla extract into the melted butter until the mixture is smooth. Add the egg yolk and mix thoroughly until well combined. Next, stir in the all-purpose flour and semisweet chocolate chips, making sure the batter is uniform. Sprinkle a few additional chocolate chips on top for extra gooeyness.
- Microwave Cookie: Microwave the mug on high for 45 to 60 seconds until the cookie puffs slightly and appears set but still soft inside. Be careful not to overcook.
- Cool and Serve: Allow the cookie to cool in the mug for about 1 minute before enjoying. This resting time helps the cookie firm up just enough for the perfect mug dessert experience.
Notes
- Use only the egg yolk, not the whole egg, to avoid excess moisture and ensure the right texture.
- Adjust microwave time based on your microwave’s wattage to prevent overcooking.
- For a dairy-free version, substitute butter with a plant-based margarine.
- Add a pinch of salt if desired to balance sweetness.
- Serve warm for the best gooey texture.
Keywords: cookie in a mug, microwave cookie, single serving dessert, quick cookie recipe, chocolate chip cookie mug

