This easy skillet brownie for two starts with a simple boxed brownie mix and a few everyday ingredients that take it to the next level. By swapping vegetable oil for melted butter, replacing water with milk, and adding vanilla extract and chocolate chips, you can turn an ordinary brownie mix into a rich, indulgent dessert.
Made in a 6-inch cast iron skillet, this brownie is the perfect size for sharing with someone special. Whether you’re planning a Valentine’s Day dinner, celebrating an anniversary, or simply craving something chocolatey after dinner, this easy dessert is sure to satisfy.
Why You’ll Love This Skillet Brownie Recipe
Easy to make with boxed brownie mix: There’s no need to measure out flour, cocoa powder, or baking powder. Starting with a boxed brownie mix keeps this recipe simple and convenient while still delivering delicious results.
Rich, fudgy chocolate flavor: Melted butter, pure vanilla extract, and semi-sweet chocolate chips add extra richness and depth of flavor to an ordinary brownie mix.
Perfect for two: A 6-inch cast iron skillet makes a smaller dessert that’s ideal for sharing without baking an entire pan of brownies. It’s also a generous single serving if you’re especially hungry for chocolate!
Restaurant-style presentation: Serving your brownie directly in the skillet gives it that warm, inviting presentation you often see at restaurants. Add a scoop of ice cream, and you’ve got a beautiful dessert with very little effort.
Great for special occasions: This skillet brownie makes a wonderful Valentine’s Day dessert, anniversary treat, date-night dessert, or sweet ending to a homemade dinner.
Easy to customize: Add chopped nuts, drizzle with chocolate or caramel sauce, or top with whipped cream and fresh strawberries. There are plenty of ways to make this dessert your own.
Watch How to Make This Skillet Brownie
Watch the video above to see exactly how I spruce up this skillet brownie.
Ingredients You’ll Need
You only need a handful of ingredients to turn an ordinary boxed brownie mix into something special.
- 1/2 of a 17-ounce box brownie mix (approximately 8 1/2 ounces): Use your favorite brand of brownie mix. I like using Ghirardelli, but other brands work, too. Different mixes may produce slightly different textures and baking times.
- 3 tablespoons unsalted butter, melted: Replaces the vegetable oil for a richer, buttery flavor. Allow the melted butter to cool slightly before combining it with the egg.
- 1 large egg: Helps bind the ingredients together and gives the brownie structure.
- 1/2 teaspoon pure vanilla extract: Enhances the chocolate flavor and adds a little extra warmth and sweetness.
- 1/8 cup milk (2 tablespoons): Replaces the water normally used in the brownie mix. Milk adds a little extra richness to the batter.
- Pinch of salt: Helps balance the sweetness and brings out the chocolate flavor.
- 1/4 cup semi-sweet chocolate chips: Adds pockets of melted chocolate throughout the brownie for an extra indulgent bite.
- Vanilla ice cream (optional): The perfect finishing touch for a warm, restaurant-style skillet brownie.
How to Make a Skillet Brownie Using Boxed Brownie Mix
This easy recipe comes together in just a few minutes before going into the oven.
Step 1: Preheat the Oven and Prepare the Skillet
Preheat your oven to 350°F.
Lightly grease a 6-inch cast iron skillet with butter or nonstick cooking spray, making sure to coat the bottom and sides. Set aside while you prepare the brownie batter.
Step 2: Measure the Brownie Mix
Open a 17-ounce package of brownie mix and measure out half of the dry mix, approximately 8 1/2 ounces.
Place the measured brownie mix into a medium mixing bowl and set aside.
Save the remaining dry mix in an airtight container for another batch.
Step 3: Melt the Butter
Melt 3 tablespoons of unsalted butter in a microwave-safe bowl or small saucepan.
Set the melted butter aside for a few minutes to cool slightly. You want the butter to remain liquid but not be so hot that it begins cooking the egg when the ingredients are combined.
Step 4: Combine the Wet Ingredients
In a separate bowl, add the egg, pure vanilla extract, milk, pinch of salt, and slightly cooled melted butter.
Whisk until the ingredients are thoroughly combined and the mixture looks smooth.
Step 5: Mix the Brownie Batter
Make a well in the center of the dry brownie mix and pour in the wet ingredients.
Using a spatula or wooden spoon, gently stir until the dry ingredients are incorporated and no large pockets of dry mix remain.
The batter will be thick, which is normal for a rich, fudgy brownie.
Avoid overmixing, as this can affect the finished texture.
Step 6: Fold in the Chocolate Chips
Add 1/4 cup of semi-sweet chocolate chips to the brownie batter.
Using a spatula, gently fold the chocolate chips into the mixture until evenly distributed.
These extra chocolate chips will melt slightly as the brownie bakes, creating delicious pockets of chocolate throughout.
Step 7: Transfer to the Cast Iron Skillet
Spoon the brownie batter into your prepared 6-inch cast iron skillet.
Use a spatula to spread the batter evenly across the bottom of the skillet, smoothing the top as needed.
Step 8: Bake the Brownie
Place the skillet in the preheated 350°F oven and bake for approximately 30 minutes, or until the edges are set and a toothpick inserted into the center comes out with a few moist crumbs.
For a fudgy brownie, avoid waiting until the toothpick is completely dry. A little melted chocolate from the chocolate chips is normal, but there should be no visibly raw batter.
Because ovens and brownie mixes vary, begin checking for doneness around 25 minutes and adjust the baking time as needed.
Step 9: Allow the Brownie to Rest
Carefully remove the skillet from the oven using oven mitts and place it on a heat-safe surface.
Allow the brownie to rest for approximately 15 minutes before serving.
This resting time allows the brownie to finish setting while remaining warm and fudgy in the center.
Remember that cast iron retains heat, so the skillet and its handle will remain hot even after removing it from the oven.
Step 10: Add Your Favorite Toppings and Serve
For the ultimate restaurant-style experience, top your warm skillet brownie with a generous scoop of vanilla ice cream.
As the ice cream begins to melt over the chocolatey brownie, it creates a delicious combination of warm chocolate and cold, creamy vanilla.
Serve immediately and enjoy!
Helpful Tips for the Best Skillet Brownie
Use a 6-inch cast iron skillet. The smaller skillet is ideal for making a dessert for two. A larger skillet will spread the batter more thinly and may require a shorter baking time.
Measure the brownie mix carefully. Since you’re only using half of the package, weighing the dry mix is the most accurate method. For a 17-ounce package, you’ll need approximately 8 1/2 ounces.
Let the melted butter cool slightly. Hot butter can begin cooking the egg before the batter reaches the oven. Allow it to cool until warm rather than hot.
Don’t overmix the batter. Stir just until everything is combined. Overmixing can make brownies tougher and less tender.
Watch the baking time. A fudgy brownie should have set edges and a center that is no longer raw. Start checking a few minutes early to avoid overbaking.
Allow time for resting. The brownie continues to firm up as it cools. Giving it about 15 minutes before serving helps the center set while keeping the dessert warm.
Serve it warm. This dessert is especially delicious when the chocolate is still soft and the vanilla ice cream begins melting into the brownie.
Be careful with the skillet. Cast iron holds heat exceptionally well. Always use an oven mitt when handling the skillet, even after it has been sitting out for several minutes.
Easy Ways to Customize Your Skillet Brownie
One of the best things about this recipe is how easily you can change it to suit your taste.
Add Chopped Nuts
Fold in a few tablespoons of chopped walnuts or pecans for extra crunch and a delicious nutty flavor that pairs beautifully with chocolate.
Make It Extra Chocolatey
Sprinkle additional chocolate chips over the top of the batter before baking, or drizzle the finished brownie with warm chocolate sauce.
Add Caramel Sauce
For a sweet and buttery finishing touch, drizzle caramel sauce over the warm brownie and vanilla ice cream.
Try Different Ice Cream Flavors
Vanilla is a classic choice, but chocolate, cookies and cream, coffee, or salted caramel ice cream would also taste delicious.
Make It Special for Valentine’s Day
Top the brownie with vanilla ice cream, fresh strawberries, and a little chocolate drizzle for a simple yet impressive Valentine’s Day dessert.
You can even place two spoons beside the skillet and share it straight from the pan once it has cooled enough to serve safely.
What Makes a Skillet Brownie Different From Regular Brownies?
The biggest difference is how the brownie is baked and served.
Traditional brownies are usually baked in a square or rectangular baking pan, cooled, and cut into individual pieces.
A skillet brownie, on the other hand, is baked in a small cast iron skillet and often served warm directly from the pan.
Cast iron distributes and retains heat well, helping create set edges while the center stays soft and chocolatey when baked properly.
The presentation is another reason skillet brownies are so popular. Instead of cutting the brownie into squares, you can add your favorite toppings and enjoy it as a warm, shareable dessert.
It’s an easy way to turn a familiar homemade treat into something that feels a little more special.
Frequently Asked Questions
Can I use any brand of boxed brownie mix?
Yes! You can use your favorite boxed brownie mix for this recipe.
I use Ghirardelli, but other brands can work as well. Keep in mind that brownie mixes vary in ingredients, package sizes, and recommended amounts of eggs, oil, and water, so the finished texture may be slightly different depending on the brand.
Why substitute butter for vegetable oil?
Butter adds a rich, buttery flavor that complements the chocolate in the brownie mix.
Vegetable oil typically produces a moist brownie, while butter adds more flavor. The substitution can also slightly change the texture, depending on the mix.
Why use milk instead of water?
Milk adds a little extra richness compared with water.
It’s a simple substitution that helps make an ordinary boxed brownie mix feel more indulgent.
Can I make this skillet brownie without a cast iron skillet?
Yes. You can use a similarly sized, oven-safe baking dish instead.
However, the baking time may vary depending on the material and depth of the dish. Check the brownie early and bake until the center is set.
How do I know when my skillet brownie is done?
The edges should look set, and the center should no longer appear wet or raw.
Insert a toothpick into the center. A few moist crumbs are ideal for a fudgy brownie, but you don’t want to see uncooked batter.
Be aware that melted chocolate chips can stick to the toothpick, so check more than one spot if necessary.
How to Store and Reheat Leftover Skillet Brownies
Storing at Room Temperature
If you have leftovers, allow the brownie to cool completely before transferring it to an airtight container.
Store at room temperature for up to 3 days, without ice cream or other perishable toppings.
Refrigerating
For longer storage, place the cooled brownie in an airtight container and refrigerate for up to 5 days.
Freezing
You can also freeze leftover brownies for up to 3 months.
Wrap the cooled brownie tightly in plastic wrap, then place it in a freezer-safe container or bag.
Thaw before reheating.
Reheating
For a quick treat, place an individual serving on a microwave-safe plate and heat in short 10–15 second intervals until warm.
You can also reheat the brownie in an oven-safe dish at 300°F until warmed through.
Add a fresh scoop of vanilla ice cream just before serving.
Easy Skillet Brownie for Two (Box Mix Upgrade)
Ingredients
Equipment
Method
- Preheat the oven to 350°F. Lightly grease a 6-inch cast iron skillet with butter or nonstick cooking spray.
- Measure half of a 17-ounce package of brownie mix (approximately 8 1/2 ounces) into a medium mixing bowl. Set aside.
- Melt the unsalted butter and allow it to cool slightly.
- In a separate bowl, whisk together the egg, vanilla extract, milk, pinch of salt, and melted butter until combined.
- Make a well in the center of the dry brownie mix. Pour in the wet ingredients and gently stir until incorporated.
- Fold in the semi-sweet chocolate chips.
- Transfer the brownie batter to the prepared cast iron skillet and spread evenly.
- Bake at 350°F for approximately 30 minutes, or until the edges are set and a toothpick inserted into the center comes out with a few moist crumbs and no raw batter.
- Remove from the oven and allow the brownie to rest for 15 minutes.
- Top with vanilla ice cream, if desired, and serve warm.
Video
Notes
- Brownie mix: Ghirardelli is my preferred brand, but other brownie mixes can be used. Results may vary by brand and formulation.
- Measuring: For best results, weigh half of the dry brownie mix rather than estimating by volume.
- Butter: Allow the melted butter to cool slightly before mixing it with the egg.
- Milk: Whole milk adds richness, but other types of milk can also work.
- Baking: Begin checking the brownie around 25 minutes. The center should be set but still fudgy, with no raw batter.
- Resting: Let the brownie rest for 15 minutes before serving to allow the center to firm up.
- Serving: Top with vanilla ice cream, chocolate sauce, caramel, or fresh strawberries.
- Storage: Store leftover brownies in an airtight container at room temperature for up to 3 days or refrigerate for up to 5 days.
More Recipes to Try
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Did you make this skillet brownie? Leave a star rating below and let me know how it turned out!