Chunky Monkey Brownies

If you’ve ever wondered what happens when classic fudgy brownies meet the natural sweetness of ripe bananas, you’re about to discover your new favorite dessert. These Chunky Monkey Brownies are a delightful twist on traditional brownies, combining rich chocolate with the subtle flavor of banana to create something truly special. Whether you’re an experienced baker or just starting your journey in the kitchen, this recipe is designed to deliver crowd-pleasing results every single time.
The name “Chunky Monkey” isn’t just catchy—it perfectly describes the generous chunks of chocolate throughout these brownies and the playful banana element that makes them unique. This recipe transforms simple pantry staples into an irresistible treat that works perfectly for potlucks, bake sales, family gatherings, or those moments when you simply need something sweet and comforting.
Why You’ll Love This Recipe
What makes these brownies stand out from the countless brownie recipes out there? First, they’re incredibly forgiving. The thick batter and straightforward mixing method mean you don’t need any special techniques or professional baking skills. Second, the banana adds natural moisture and a subtle flavor that complements the chocolate without overpowering it. You won’t bite into these and think “banana bread”—instead, you’ll enjoy a complex, nuanced sweetness that keeps you reaching for another piece.
The texture is another winning feature. These aren’t cakey brownies, nor are they super fudgy. They strike that perfect middle ground with a slightly crispy top, tender middle, and pockets of melted chocolate throughout. The chocolate chips create little pools of molten chocolate that make every bite exciting.
Gathering Your Ingredients
Before you begin, let’s talk about what you’ll need. This recipe calls for simple ingredients you likely already have in your pantry, making it perfect for spontaneous baking sessions.
For the wet ingredients, you’ll need 1 cup of softened unsalted butter and 2 large eggs. The butter should be soft enough to blend easily but not melted—think room temperature. You’ll also need 2 teaspoons of vanilla extract, which adds warmth and depth to the chocolate flavor.
For the sweetness, combine 1½ cups of brown sugar with ½ cup of white granulated sugar. The brown sugar contributes moisture and a subtle molasses note, while the white sugar provides structure and that classic sweet flavor.
For structure and flavor, you’ll use 2 cups of all-purpose flour, ¼ teaspoon of salt, and one medium banana. Choose a banana that’s ripe but not overly spotty—you want natural sweetness without an overwhelming banana flavor.
For the chocolate element, you’ll need 2 cups of semi-sweet chocolate chips for the batter, plus an additional ¼ cup for topping. Feel free to use milk chocolate chips if you prefer a sweeter result, or dark chocolate chips for a more sophisticated flavor profile.

Equipment You’ll Need
This recipe requires minimal equipment, making cleanup a breeze. You’ll need standard mixing bowls—one large bowl works perfectly for combining all your ingredients. An electric mixer (either handheld or stand mixer) makes the mixing process easier, though you could mix by hand if needed.
For baking, you’ll use a 9×13 inch baking pan. This size is important because it creates brownies with the right thickness and baking time. Metal pans tend to create crispier edges, while glass pans provide more even heating. Either works beautifully.
Don’t forget basic tools like measuring cups and spoons, a rubber spatula for folding in the chocolate chips, and a toothpick for testing doneness.
Step-by-Step Instructions
Now let’s walk through the process of creating these delicious brownies from start to finish.
Preparing Your Oven and Pan: Begin by preheating your oven to 350°F. This temperature is crucial—too hot and the edges will burn before the center cooks; too cool and you’ll end up with cakey brownies instead of that perfect chewy texture. While the oven heats, grease your 9×13 pan thoroughly with butter or non-stick spray. For extra insurance against sticking, you can line it with parchment paper.
Creating the Base: In your large mixing bowl, combine the softened butter, eggs, brown sugar, white sugar, salt, and vanilla extract. Using your electric mixer, beat these ingredients together until the mixture is smooth and well-combined. You’re looking for a creamy consistency where the sugars have dissolved into the butter and eggs. This usually takes about 2-3 minutes of mixing.

Adding Flour and Banana: Here’s where the magic starts to happen. Add your 2 cups of flour to the bowl along with your peeled banana. Mix everything together until just combined. The banana will break down and incorporate into the batter as you mix. Don’t worry if you see small banana pieces—they’ll bake beautifully into the brownies. The batter will be thick at this stage, which is exactly what you want.
Folding in the Chocolate: Remove your bowl from the mixer and grab a sturdy rubber spatula. Add the 2 cups of chocolate chips and gently fold them into the thick batter. Use a folding motion rather than stirring to ensure the chips are evenly distributed without overmixing the flour. The batter will be quite thick and dense—this is normal and necessary for creating those perfect chewy brownies.
Preparing for Baking: Pour the thick batter into your greased pan. Because the mixture is so thick, you’ll need to use your spatula to spread it evenly across the pan. Take your time with this step to ensure even baking. Once spread, sprinkle the remaining ¼ cup of chocolate chips over the top. These will create a beautiful chocolate-studded surface.
Baking to Perfection: Place your pan in the preheated 350°F oven and bake for 35-40 minutes. The exact time will depend on your oven and pan type. Start checking at the 35-minute mark by inserting a toothpick into the center. You want it to come out clean or with just a few moist crumbs—not wet batter. Remember that brownies continue cooking slightly after you remove them from the oven, so don’t overbake.
The Cooling Process: This is the hardest part—waiting! Remove the pan from the oven and place it on a wire cooling rack. Let the brownies cool completely before cutting. This usually takes at least an hour, but patience pays off. Cutting warm brownies results in a gooey mess, while cooled brownies cut into perfect, neat squares.
Tips for Success
Want to take these brownies from great to extraordinary? Here are some expert tips. First, room temperature ingredients mix more easily and create a better texture. Take your butter and eggs out of the refrigerator about 30 minutes before baking.
For extra banana flavor, try adding a few drops of banana extract along with the vanilla. If you love nuts, fold in ½ cup of chopped walnuts or pecans with the chocolate chips for added crunch and flavor.
Storage is simple—keep these brownies in an airtight container at room temperature for up to 4 days, or refrigerate for up to a week. They also freeze beautifully for up to 3 months. Just wrap individual pieces in plastic wrap, then place in a freezer bag.

Serving Suggestions
These brownies are delicious on their own, but they’re absolutely divine when served warm with a scoop of vanilla ice cream. The contrast of cold ice cream with warm brownies is heavenly. A drizzle of chocolate or caramel sauce takes them to another level, or try a dollop of whipped cream and sliced bananas for a banana split-inspired presentation.
For gatherings, cut them into small squares and serve on a decorative platter. They pair beautifully with coffee, making them perfect for brunch or afternoon tea.
Final Thoughts
These Chunky Monkey Brownies prove that simple ingredients and straightforward techniques can create something truly special. The combination of chocolate and banana might seem unexpected, but one bite will convince you it’s a match made in dessert heaven. So gather your ingredients, preheat that oven, and get ready to create a treat that will have everyone asking for the recipe!
