This chocolate chip cookie mug cake delivers a warm, gooey, single-serving dessert in about two minutes. It uses pantry staples like flour, butter, and chocolate chips to create a soft, cookie-like cake with a crisp top and a tender center. Perfect for a late-night craving or a quick treat, this recipe is designed to be simple, reliable, and genuinely satisfying.
Ingredients
- 3 tablespoons (24 g) all-purpose flour
- 2 tablespoons (25 g) granulated sugar
- 1/8 teaspoon baking powder
- 1/8 teaspoon salt
- 2 tablespoons (28 g) unsalted butter, melted
- 2 tablespoons (30 ml) milk (any kind)
- 1/4 teaspoon vanilla extract
- 2 tablespoons (30 g) chocolate chips (semi-sweet or milk)
Instructions
- In a microwave-safe mug (about 12 oz / 350 ml capacity), whisk together the flour, sugar, baking powder, and salt with a fork until combined.
- Add the melted butter, milk, and vanilla extract. Stir with the fork until the batter is smooth and no dry streaks remain. Make sure to scrape the bottom and sides of the mug so everything is incorporated.
- Fold in the chocolate chips, reserving a few to sprinkle on top if you like.
- Microwave on high for 60 to 90 seconds. Start checking at 60 seconds—the cake should be set on top but still slightly moist in the center. Cooking times vary with microwave wattage (see Tips).
- Let the mug cake cool for 1 to 2 minutes before eating. It will be very hot, and the center will continue to set as it rests.
Tips
- Microwave wattage matters: A 1000W microwave will likely cook the cake in 60–70 seconds, while a 700W microwave may need 90 seconds or a bit more. Check at 60 seconds and add 10-second bursts until done. Overcooking makes it rubbery.
- Use the right mug: A standard 12 oz mug works best. If the mug is too small, the batter can overflow during cooking. If it’s too large, the cake will be shallow and cook too quickly.
- Don’t overmix: Stir just until the flour is moistened. Overmixing develops gluten, which can make the cake tough and chewy instead of tender.
- Substitutions: For a dairy-free version, use coconut oil or vegan butter and any non-dairy milk. For a gluten-free version, substitute a 1:1 gluten-free flour blend—the texture will be slightly more crumbly but still delicious.
Serving Suggestions
Enjoy the mug cake warm, straight from the mug, or transfer it to a small plate. Top with a scoop of vanilla ice cream, a drizzle of caramel or chocolate sauce, or a dusting of powdered sugar. A sprinkle of flaky sea salt on top before serving enhances the chocolate flavor nicely.
Variations
- Double Chocolate: Replace 1 tablespoon (8 g) of the flour with 1 tablespoon (8 g) of unsweetened cocoa powder for a richer chocolate base.
- Peanut Butter Swirl: Add 1 tablespoon (15 g) of peanut butter to the batter along with the butter and milk, and swirl it in gently before cooking.
- Nuts and Dried Fruit: Fold in 1 tablespoon of chopped walnuts, pecans, or dried cranberries along with the chocolate chips.
- Brown Butter: Brown the butter in a small skillet over medium heat until it smells nutty and turns golden, then let it cool slightly before using. This adds a deep, toasty flavor.
Storage and Reheating
This mug cake is best eaten fresh, but you can store it if needed. Cover the mug with plastic wrap or transfer the cake to an airtight container and refrigerate for up to 2 days. To reheat, microwave on medium power in 15-second bursts until warm, being careful not to overcook. The texture will be denser after refrigeration. Do not freeze—the cake becomes mushy when thawed.
Frequently Asked Questions
Can I make this in a toaster oven or regular oven? Yes. Pour the batter into a small oven-safe ramekin and bake at 350°F (175°C) for 12–15 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs. The texture will be slightly more cake-like than the microwave version.
Why is my mug cake dry or rubbery? The most common cause is overcooking. Microwave ovens vary widely, so start with the shortest time and add more in 10-second increments. Also, make sure to measure the flour correctly—spoon it into the measuring spoon and level it off, rather than scooping, which packs in extra flour.
Can I use a different sweetener? Brown sugar works well in place of granulated sugar, adding a deeper molasses flavor and a slightly chewier texture. Liquid sweeteners like honey or maple syrup will make the batter too wet—if you try them, reduce the milk to 1 tablespoon (15 ml).
Is this safe to eat if I use raw eggs? This recipe does not contain eggs, so there is no risk of undercooked eggs. If you choose to add an egg yolk for extra richness, note that the cake must be cooked until it reaches 160°F (71°C) as a safe minimum temperature for egg dishes, and it will change the texture significantly.
Can I double the recipe? Yes, but do not cook it in one large mug—use two separate mugs and cook them one at a time, or cook them together for 2 to 3 minutes, checking frequently. Doubling the batter in one mug will likely overflow.
What if I don’t have baking powder? You can substitute 1/4 teaspoon of baking soda plus 1/2 teaspoon of lemon juice or vinegar added to the wet ingredients. The cake will be slightly less fluffy but still works.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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