Easy Fudgy Strawberry Brownies: The Ultimate Box Cake Mix Recipe
Strawberry Brownies – a super simple, fun, and irresistibly easy dessert you can whip up in minutes. Starting with a convenient box cake mix, this recipe transforms into a rich, decadent, and almost fudgy brownie that will surprise and delight everyone!
Whether you’re a devout fan of classic Fudgy Brownies or you enjoy exploring new flavors with treats like Lemon Brownies, you’re about to fall in love with the sweet and vibrant twist of these Strawberry Brownies. Their beautiful pink hue and delightful flavor make them a fantastic choice for spring gatherings, summer parties, or simply a fun weeknight treat. The best part? They are incredibly quick to prepare, allowing you to have them in the oven just minutes after you start!

The Unexpected Secret: Starting with a Box Cake Mix
This delightful strawberry brownie recipe begins with a humble box cake mix, a method that might seem unconventional, especially if you’re accustomed to traditional brownie recipes. I admit, it goes against almost everything I typically advise when crafting the perfect brownie from scratch. However, for achieving an authentic, pronounced strawberry flavor and a wonderfully fudgy texture, it is truly the best and easiest approach.
The primary challenge with many strawberry baked goods, particularly when using fresh strawberries, lies in their high moisture content. Fresh berries tend to release a lot of liquid during baking, which can result in a wet, dense, and overly cakey texture rather than the desired fudgy consistency. This often leads to a less-than-ideal brownie. To counteract this, many recipes call for dehydrated strawberries, which can be an extra step or an uncommon pantry item.
By leveraging a strawberry box cake mix, you bypass these challenges entirely. The mix is expertly formulated with the perfect balance of dry ingredients and strawberry flavoring, ensuring a consistent, vibrant taste without the moisture pitfalls of fresh fruit. When combined with just the right amount of additional fat (oil) and eggs (protein and emulsification), the cake mix transforms into a rich, dense batter that bakes up beautifully into a genuinely fudgy brownie. It’s a clever shortcut that doesn’t compromise on flavor or texture, delivering a homemade-tasting dessert with minimal effort.
Gather Your Simple Ingredients
This recipe calls for a minimal number of ingredients, making it ideal for those busy days when you crave a sweet treat without a trip to a specialty store. You likely have most of these staples in your pantry already!
Be sure to scroll to the bottom of the post for the FULL PRINTABLE recipe card with exact measurements.
- Strawberry Cake Mix: This is the star of our show, providing both the strawberry flavor and the base for our fudgy brownies. Any standard 15.25 oz box will work perfectly.
- Vegetable or Canola Oil: Essential for adding moisture and contributing to that desirable fudgy texture. You can use either vegetable or canola oil interchangeably.
- Eggs: Eggs act as a binder, adding richness and structure to the brownies. Large eggs are typically used in baking.
- White Chocolate Chips: These are optional but highly recommended. They add a delightful creamy sweetness and a textural contrast that complements the strawberry flavor beautifully. You can use standard white chocolate chips or even chopped white chocolate bars.
- Vanilla Frosting (optional): For those who love an extra layer of sweetness and a decorative touch, a simple vanilla frosting elevates these brownies. You can make your own from scratch using the recipe provided in the recipe card or use your favorite store-bought brand for convenience.

How To Make Strawberry Brownies: A Step-by-Step Guide
Preparing these strawberry brownies is incredibly straightforward, making them perfect for beginner bakers or when you need a quick dessert fix. Follow these simple steps for perfectly fudgy results every time:
- Prepare Your Batter. In a large mixing bowl, combine the strawberry cake mix, vegetable or canola oil, and eggs. Using a sturdy spatula or a handheld electric mixer on low speed, mix these ingredients until they are just well combined and smooth. The batter will be noticeably thick – this is exactly what you want for a fudgy brownie texture! Be careful not to overmix, as excessive mixing can develop the gluten in the flour, leading to a tougher, more cake-like brownie.
- Fold in the Chocolate. Once your batter is smooth, gently fold in the white chocolate chips. Stir until they are evenly distributed throughout the thick, pink batter. The white chocolate adds a lovely textural element and a complementary sweetness that truly enhances the strawberry flavor.
- Bake to Perfection. Pour the prepared batter into an 8 or 9-inch square baking dish that has been greased and floured or lined with parchment paper for easy removal. Spread the batter evenly to the edges. Bake for approximately 20-25 minutes in a preheated oven. The key here is to look for a tester (like a toothpick or thin knife) inserted into the center to come out with moist crumbs attached, but not wet batter. A “mostly clean” tester indicates they are done, but slightly underbaked for that ultimate fudgy center.
- Cool and Serve. Once baked, remove the brownies from the oven and allow them to cool completely in the pan on a wire rack. This cooling step is crucial for the brownies to set properly and achieve their desired fudgy consistency. If desired, you can then top them with a luscious layer of vanilla frosting before slicing into squares and serving.
I understand it might seem counterintuitive to start with a cake mix when your goal is to make brownies, but trust me when I say this method truly works wonders! By following this specific recipe and disregarding the measurements or instructions often found on the cake mix box (which are designed for a cake, not a brownie), you will achieve that rich, dense, and wonderfully fudgy texture characteristic of a perfect brownie. The magic lies in adjusting the fat and egg ratios to create a denser batter than a typical cake.
The optional vanilla frosting recipe is conveniently located in the recipe card below. Feel free to use this homemade recipe, adapt your own favorite, or opt for a high-quality store-bought frosting for an even quicker finish. Whatever you choose, a sweet, creamy topping pairs beautifully with the vibrant strawberry base.

Unlocking Fudgy Perfection: Expert Tips & Tricks
While these strawberry brownies are incredibly forgiving, a few simple tips can elevate your baking experience and ensure you achieve the most delicious results:
- Mixing for the Perfect Texture: You can certainly use an electric mixer for combining the ingredients, but a simple bowl and spatula work just as effectively. Unlike traditional cake mixes that often require vigorous beating to incorporate air, brownies thrive on minimal mixing. You don’t need to beat for a long time; just mix until the ingredients are well combined and smooth. Overmixing can lead to the development of gluten, resulting in tougher, more cake-like brownies rather than the desired fudgy consistency.
- The Art of Underbaking for Fudginess: This is perhaps the most crucial tip for achieving that signature fudgy texture. Always aim to underbake your brownies slightly. Just like with classic chocolate brownies, you absolutely do not want to overbake them. When you take the brownies out of the oven, the hot pan retains a significant amount of heat, causing the brownies to continue cooking (this is known as carry-over cooking). For the best, most decadent fudgy results, remove them from the oven when a toothpick inserted into the center comes out with moist crumbs attached, but no wet batter. A completely clean toothpick indicates overbaking.
- To Frost or Not to Frost? That is the Question: The frosting for these brownies is completely optional and depends entirely on your personal preference. My family, for instance, are true frosting fanatics, so it’s always a must at our house! However, these brownies boast that classic crackly top that many brownie purists adore. If you prefer the unadorned, rich brownie experience, feel free to leave the frosting off. They are wonderfully delicious either way.
- Perfecting Your Toppings – Timing is Everything: If you plan on topping your strawberry brownies with fresh strawberries, as pictured, it’s best to do so right before serving them. Fresh fruit, especially berries, will release juices over time. If added too early, these juices can leak over the top of your brownies, making them soggy, or create unsightly puddles of liquid on top of your frosting, which can make them look unappetizing. For the freshest appearance and taste, slice and arrange fresh strawberries just before presentation. Alternatively, consider a sprinkle of powdered sugar, a drizzle of white chocolate, or some festive sprinkles for an equally appealing finish.

Serving Suggestions & Storage Tips
These delightful strawberry brownies are versatile enough for any occasion. Serve them warm for a gooey, extra-fudgy experience, perhaps with a scoop of vanilla bean ice cream or a dollop of fresh whipped cream. Chilled brownies offer a firmer, denser bite that many also enjoy. Their vibrant pink color and sweet flavor make them a hit at potlucks, birthday parties, or as a charming addition to a dessert platter. They are so easy to make, you can literally have them in the oven 5 minutes after you start prepping!
How to Store Strawberry Brownies
To keep your strawberry brownies fresh and delicious, store them in an airtight container at room temperature for up to 3-4 days. If you’ve frosted them, especially with a cream cheese frosting, it’s best to store them in the refrigerator, where they’ll last for about 5-7 days. Allow refrigerated brownies to come to room temperature for about 15-20 minutes before serving for the best texture. You can also freeze unfrosted brownies for up to 2-3 months. Simply wrap them tightly in plastic wrap and then in foil before freezing. Thaw them at room temperature when you’re ready to enjoy.
Creative Variations for Your Strawberry Brownies
While the classic strawberry brownie with white chocolate chips is a winner, don’t hesitate to get creative and customize your batch:
- Different Chocolate Chips: Instead of white chocolate, try milk chocolate chips for a chocolate-covered strawberry vibe, or dark chocolate chips for a richer contrast.
- Nutty Addition: For a delightful crunch, fold in half a cup of chopped pecans or walnuts into the batter with the chocolate chips.
- Extract Enhancements: A quarter teaspoon of almond extract or a few drops of rose water can add another layer of sophisticated flavor that pairs beautifully with strawberry.
- Swirl it Up: Before baking, dollop a spoonful of cream cheese frosting (or even a swirl of melted white chocolate) over the batter and swirl it with a knife for a beautiful marbled effect.
- Berry Medley: While fresh strawberries are tricky to bake in, you could experiment with a tiny amount of very finely chopped freeze-dried strawberries for an intense berry boost without the moisture issue.
- Different Cake Mix Flavors: The “cake mix brownie” technique can be adapted for other flavors! Try a lemon cake mix for lemon brownies, or even a yellow cake mix with sprinkles for a funfetti brownie.
So, if you have a brownie lover and a strawberry enthusiast in your life, these easy Strawberry Brownies are going to be the absolute best mash-up, guaranteed to bring smiles all around. Their vibrant color, incredible flavor, and simple preparation make them a perfect choice for any occasion, proving that sometimes, the simplest shortcuts lead to the most delicious results!
More Strawberry Dessert Recipes You’ll Love
If you’ve fallen for the charm of strawberry desserts, there are plenty more delightful recipes to explore:
- Strawberry Cheesecake Lasagna
- Strawberry Cream Squares
- Strawberry Crumb Bars
- Strawberry Almond Cupcakes
- Strawberry Poke Cake

Strawberry Brownies
Ingredients
- 15.25 oz Strawberry Cake Mix
- 1/3 cup vegetable oil
- 2 whole large eggs
- 1/2 cup white chocolate chips
Vanilla Frosting (optional)
- 1/2 cup butter, softened
- 2-3 cups powdered sugar, approximately
- 2 Tablespoons milk, approximately
- 1/2 teaspoon vanilla extract
Instructions
- Preheat oven to 350º F. Line an 8 or 9 inch baking pan with parchment paper or grease and flour well.
- In a bowl mix together cake mix, vegetable oil, and eggs until well combine and smooth. Batter will be thick.15.25 oz Strawberry Cake Mix, 1/3 cup vegetable oil, 2 whole large eggs
- Add white chocolate chips and mix until evenly incorporated.1/2 cup white chocolate chips
- Pour batter into prepared pan and bake for 20-25 minutes until a tester comes out mostly clean.
- Remove from the oven and let cool completely.
- If making the frosting cream the butter until fluffy. Add vanilla, milk, and 1/2 of the powdered sugar. Continue adding powdered sugar to get to the right consistency. You might have to adjust the milk or powdered sugar to make it spreadable. Spread over the cooled bars1/2 cup butter, 2-3 cups powdered sugar, 2 Tablespoons milk, 1/2 teaspoon vanilla extract
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Additional Info
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