This Microwave Mug Blondie is your golden ticket to a warm, gooey dessert in just minutes. With a rich, buttery flavor and a soft, chewy center, it’s the perfect treat when you’re short on time. The caramel-like sweetness paired with a hint of vanilla creates a comforting indulgence that feels homemade. Plus, it’s ready in under 11 minutes—no oven required!
Each bite delivers a delightful contrast of textures, from the slightly crisp edges to the melt-in-your-mouth middle. Whether you’re satisfying a late-night craving or treating yourself after a long day, this single-serving blondie is both effortless and irresistible. It’s proof that decadent desserts don’t have to be complicated—just grab a mug and enjoy!
What You’ll Need

- 2 tablespoons (1oz/30g) butter, melted (use unsalted for a less sweet option)
- 3 tablespoons brown sugar (light or dark, depending on your preference)
- 3 tablespoons milk (dairy or plant-based alternatives work too)
- ½ teaspoon vanilla extract (pure or imitation)
- 6 tablespoons all-purpose flour (for a gluten-free option, use a 1:1 gluten-free flour blend)
- 1/8 teaspoon salt (enhances the flavor)
- 1/8 teaspoon baking powder (helps the blondie rise)
- 1 tablespoon white chocolate chips (substitute with dark or milk chocolate chips if preferred)
- 4 caramel candies, chopped (or use caramel bits for convenience)
- Ice cream and caramel sauce for topping (optional, but highly recommended!)
How to Make It
- Melt the butter in a large, microwave-safe mug. Heat for about 20-30 seconds until fully melted.
- Add the brown sugar, milk, and vanilla to the melted butter. Stir until the sugar is completely dissolved.
- Gradually mix in the flour, salt, and baking powder. Stir until the batter is smooth and well-combined.
- Fold in the white chocolate chips and chopped caramel candies. Ensure they are evenly distributed throughout the batter.
- Cover the mug and store it in the fridge for up to 2 days if you’re not ready to bake it yet.
- When ready to cook, microwave the mug for 1 minute and 20 seconds. Check the batter—if it looks slightly undercooked, microwave for an additional 30 seconds until fully cooked.
- Top with a scoop of ice cream and a drizzle of caramel sauce (optional but delicious). Enjoy your warm, gooey blondie straight from the mug!
Topping Ideas to Elevate Your Mug Blondie
While ice cream and caramel sauce are classic choices, try experimenting with other toppings for a fun twist. A dollop of whipped cream, a sprinkle of sea salt, or a handful of crushed nuts can add texture and flavor. For a fruity touch, add fresh berries or a drizzle of raspberry sauce.
Perfect Pairings for Your Microwave Treat
This Microwave Mug Blondie is delicious on its own, but pairing it with a hot beverage can make it even more satisfying. Enjoy it with a cup of coffee, hot chocolate, or chai tea for a cozy dessert experience. It’s also a great treat to share with friends during a movie night!
Storage and Reheating Tips for Freshness
If you’re not ready to enjoy your blondie right away, cover the mug with plastic wrap and store it in the fridge for up to 2 days. When reheating, start with 1 minute and 20 seconds in the microwave, then add 30-second intervals if needed. This ensures it’s warm and gooey without overcooking.
Quick Variations to Customize Your Blondie
Switch up the mix-ins to suit your taste! Swap white chocolate chips for dark or milk chocolate, or add chopped nuts for crunch. You can also replace caramel candies with butterscotch chips or a swirl of peanut butter. The possibilities are endless!
Time-Saving Tips for Busy Bakers
To make this recipe even quicker, measure out your dry ingredients ahead of time and store them in a small container. This way, you can simply add them to the mug when you’re ready to bake. It’s a great hack for satisfying your sweet tooth in a flash!

Microwave Mug Blondie
Ingredients
- 2 tablespoons butter, melted
- 3 tablespoons brown sugar
- 3 tablespoons milk
- 1/2 teaspoon vanilla
- 6 tablespoons flour
- 1/8 teaspoon salt
- 1/8 teaspoon baking powder
- 1 tablespoon white chocolate chips
- 4 caramel candies, chopped
- Ice cream and caramel sauce for topping (optional)
Instructions
- Melt butter in a large, microwave-safe mug.
- Add the brown sugar, milk and vanilla and mix until the sugar is dissolved.
- Gradually stir in flour, salt and baking powder. Stir until well-blended.
- Add the white chocolate chips and caramel candies.
- Cover and store in the fridge for up to 2 days.
- When ready to eat, microwave for 1 minute and 20 seconds. If the batter looks a bit undercooked microwave for an additional 30 seconds until cooked.
- Top with ice cream and caramel sauce and enjoy!