Warm, gooey, and ready in just 6 minutes, this Chocolate Chip Mug Cookie is your ultimate dessert fix. With a soft, chewy center and melty chocolate chips, it’s like having a fresh-baked cookie without the wait. Perfect for those late-night cravings or a quick sweet treat, this single-serving delight is packed with rich, buttery flavor and a hint of vanilla. Plus, it’s made in the microwave, so you can skip the oven and dive right in!
Every bite is a cozy hug of comfort, with the perfect balance of sweetness and texture. The golden edges give way to a tender, almost doughy middle, while the chocolate chips add bursts of indulgence. Whether you’re treating yourself or sharing with a friend, this mug cookie is a 5-minute prep wonder that feels like a little slice of happiness. Who knew something so simple could taste so incredible?
What You’ll Need

- 1 Tablespoon butter, melted (unsalted or salted, depending on preference)
- 1 egg yolk (save the egg white for another recipe!)
- 1 Tablespoon brown sugar (light or dark, both work)
- 1 Tablespoon sugar (granulated or caster sugar)
- 1 pinch of salt (enhances the flavor)
- 2 drops vanilla extract (or substitute with almond extract for a twist)
- ¼ cup flour (all-purpose works best)
- Handful of chocolate chips (use as many or as few as you like; dark, milk, or white chocolate all work)
How to Make It
- Combine ingredients: Place the melted butter, egg yolk, brown sugar, sugar, salt, vanilla extract, flour, and chocolate chips into a microwave-safe mug.
- Mix thoroughly: Stir all the ingredients together until completely combined. Make sure there are no dry pockets of flour.
- Microwave: Cook on high for 50 seconds to 1 minute. The cookie should look set but still slightly soft in the center. (If you prefer a firmer texture, add 10-15 seconds, but be careful not to overcook.)
- Top and enjoy: Let it cool for a minute, then add your favorite toppings like ice cream, whipped cream, or chocolate sauce. Dig in while it’s warm!
Topping & Serving Ideas to Elevate Your Mug Cookie
Take your Chocolate Chip Mug Cookie to the next level with fun toppings! A scoop of vanilla ice cream melts perfectly over the warm cookie, creating a gooey, indulgent treat. For a lighter option, try whipped cream or a drizzle of chocolate sauce. Feeling adventurous? Add a sprinkle of sea salt or crushed nuts for a sweet-and-savory twist.
Quick Recipe Variations for Every Craving
Customize your mug cookie to suit your taste! Swap chocolate chips for white chocolate, peanut butter chips, or even chopped nuts. For a fruity twist, mix in a few dried cranberries or a handful of blueberries. If you’re a fan of texture, add a tablespoon of oats for a chewier bite. The possibilities are endless!
Time-Saving Tips for Busy Bakers
Pre-measure your dry ingredients ahead of time and store them in small containers or bags for a quick grab-and-go option. Keep melted butter and egg yolks ready in the fridge for even faster prep. This way, you can whip up your mug cookie in under 2 minutes when the craving strikes!
Storage & Reheating Tips for Leftovers (If Any!)
If you somehow have leftovers, store your mug cookie in an airtight container at room temperature for up to a day. To reheat, microwave for 10-15 seconds to restore that warm, gooey texture. For a crispier edge, pop it in a toaster oven for a minute or two.
Common Questions Answered
Can I use a whole egg instead of just the yolk? Yes, but the texture may be slightly denser. Stick to the yolk for a richer, softer cookie. Can I bake this in the oven instead? Absolutely! Bake at 350°F (175°C) for 10-12 minutes in an oven-safe ramekin. Enjoy!

Chocolate Chip Mug Cookie
Ingredients
- 1 Tablespoon butter, melted
- 1 egg yolk
- 1 Tablespoon brown sugar
- 1 Tablespoon sugar
- 1 pinch salt
- 2 drops vanilla extract
- 1/4 cup flour
- handful chocolate chips as many or as little as you would like
Instructions
- Place all ingredients into microwave safe mug.
- Stir ingredients until completely mixed.
- Microwave on high for 50 seconds to 1 minute.
- Top with your favorite ice cream, whipped cream, or chocolate sauce, and enjoy!