Monster Cookie Fudgy Brownies Recipe
If you have a sweet tooth craving something rich, chocolaty, and packed with a delightful twist, you’re in for a treat with these Monster Cookie Fudgy Brownies. This recipe combines the dense, gooey texture of classic fudgy brownies with the playful addition of cookie-inspired flavors and textures that make every bite exciting. Whether you’re sharing them with friends or indulging yourself, these brownies are the ultimate comfort dessert that truly stands out in both taste and character.

Ingredients You’ll Need
These ingredients are straightforward but crucial, each playing a vital role in crafting the perfect balance of fudginess, sweetness, and that irresistible cookie crunch. From the rich cocoa powder to the careful blend of chocolate chips, you’ll appreciate how every item adds depth and flavor.
- White granulated sugar (1 1/3 cup): Sweetens the brownies and helps create that tender crumb texture that melts in your mouth.
- Large eggs (2): Provide structure and moisture, helping the brownies hold together with that perfect fudgy middle.
- Egg yolk (1): Adds richness and enhances the chewy texture you crave in a brownie.
- Unsalted butter (5 TBSP): Brings a creamy richness and helps the brownies stay moist and luscious.
- Oil (1/3 cup, canola or vegetable): Keeps the brownies tender and fudgy by maintaining moisture without making them greasy.
- Pure vanilla extract (1 tsp): Infuses warm, sweet undertones that complement the chocolate perfectly.
- All-purpose flour (1/2 cup + 1/2 cup): Adds structure; the split amounts are key to balancing the fudgy texture while allowing the cookie elements to shine.
- Unsweetened cocoa powder (3/4 cup, Dutch process): Packs a deep, luxurious chocolate flavor and dark color that’s irresistible.
- Cornstarch (1 TBSP + 1 tsp): Helps create a soft, tender brownie by lightening the flour’s structure slightly.
- Salt (1/4 tsp): Enhances all the sweet flavors and balances the chocolate’s richness.
- Semi-sweet chocolate chips (1/2 cup): Adds pockets of gooey, melty chocolate for extra indulgence in every bite.
- Milk chocolate chips (1/2 cup): Introduce a creamy sweetness that contrasts beautifully with the bittersweet cocoa.
How to Make Monster Cookie Fudgy Brownies
Step 1: Prepare your baking pan and preheat the oven
Start by preheating your oven to 325°F (165°C). Lightly grease an 8-inch square baking pan or line it with parchment paper for easy removal. This ensures your brownies bake evenly and come out cleanly for perfect pieces every time.
Step 2: Combine wet ingredients
In a mixing bowl, whisk together the white granulated sugar, eggs, and the extra egg yolk until smooth and slightly pale. Melt the unsalted butter and stir it in with the oil and vanilla extract, blending everything into a luscious, glossy batter.
Step 3: Mix dry ingredients
In a separate bowl, sift together the all-purpose flour, Dutch process cocoa powder, cornstarch, and salt. This step is essential for removing lumps and evenly distributing all the dry components, setting the stage for a smooth brownie texture.
Step 4: Combine wet and dry mixtures
Slowly fold the dry mixture into the wet batter with a spatula, just until incorporated. Be careful not to overmix; you want to keep the batter thick and fudgy, ensuring those signature Monster Cookie Fudgy Brownies have that dense, chewy texture.
Step 5: Fold in chocolate chips
Gently fold in both the semi-sweet and milk chocolate chips to the batter. This careful addition will deliver delightful bursts of creamy, melty chocolate throughout every bite, enhancing the cookie-inspired vibe of these brownies.
Step 6: Bake and cool
Pour the batter into your prepared pan, spreading it evenly. Bake in the preheated oven for about 25 to 30 minutes or until the edges are set but the center still jiggles slightly when you gently shake the pan. Allow the brownies to cool completely before slicing to maintain their fudgy integrity.
How to Serve Monster Cookie Fudgy Brownies

Garnishes
A light dusting of powdered sugar or a drizzle of melted chocolate adds a pretty finishing touch. For a little extra excitement, sprinkle some crushed mini cookies or chopped nuts on top right after baking to keep them in place.
Side Dishes
Pair these Monster Cookie Fudgy Brownies with a scoop of your favorite vanilla ice cream or a dollop of whipped cream. The contrast between the warm, fudgy brownies and the cold creaminess brightens the entire dessert experience.
Creative Ways to Present
Cut the brownies into bite-sized squares and serve on a platter with colorful sprinkles or edible glitter for a festive twist. Or stack them as brownie sandwiches filled with cookie butter or peanut butter for a playful treat that’s perfect for gatherings.
Make Ahead and Storage
Storing Leftovers
Wrap the brownies tightly in plastic wrap or store them in an airtight container to keep them moist and fudgy. They stay delicious for up to 4 days at room temperature or up to a week refrigerated.
Freezing
Monster Cookie Fudgy Brownies freeze beautifully. Simply cut them into squares, wrap each piece individually in plastic wrap, and place in a freezer-safe bag. They can last up to 3 months frozen without losing their fudgy charm.
Reheating
To enjoy the brownies warm, microwave a piece for 10 to 15 seconds or pop them in a preheated oven at 300°F (150°C) for a few minutes. This brings back that fresh-baked fudgy texture and melts the chocolate chips to gooey perfection.
FAQs
Can I substitute the oil with more butter?
Yes, you can use additional melted butter in place of oil, but keep in mind that oil tends to make brownies moister and fudgier. Butter will add more richness but might make the texture slightly denser.
What if I don’t have Dutch process cocoa powder?
You can substitute with natural cocoa powder, but the brownies might be a bit more acidic and less smooth in color. Adding a pinch of baking soda can help balance the acidity if needed.
Can I add nuts or other mix-ins to the Monster Cookie Fudgy Brownies?
Absolutely! Chopped walnuts, pecans, or even some peanut butter chips would complement the chocolate beautifully and add an extra layer of texture.
How do I know when the brownies are done baking?
Look for set edges and a slightly jiggly center when you shake the pan gently. The brownies will continue to set as they cool, so avoid overbaking to keep them fudgy.
Can I use brown sugar instead of white sugar?
Using brown sugar will add a deeper molasses flavor and make the brownies chewier. You can replace all or part of the white sugar to customize the flavor to your liking.
Final Thoughts
These Monster Cookie Fudgy Brownies are one dessert you’ll want to keep in your recipe collection forever. They’re rich, indulgent, and uniquely playful thanks to their monster cookie-inspired mix-ins. I can’t wait for you to try making them and enjoy every bite — trust me, they’ll become a favorite for all your celebrations and cozy nights in!
PrintMonster Cookie Fudgy Brownies Recipe
These Monster Cookie Fudgy Brownies combine the rich, dense texture of fudgy brownies with the playful, colorful mix-ins of classic monster cookies. Loaded with chocolate chips and baked to gooey perfection, this dessert offers a decadent treat perfect for chocolate lovers craving a fun twist on traditional brownies.
- Prep Time: 15 minutes
- Cook Time: 25-30 minutes
- Total Time: 40-45 minutes
- Yield: 16 brownies (approximately 2-inch squares) 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
Wet Ingredients
- 1 1/3 cup White granulated sugar
- 2 Large eggs
- 1 Egg yolk
- 5 TBSP Unsalted butter, melted
- 1/3 cup Oil (canola or vegetable)
- 1 tsp Pure vanilla extract
Dry Ingredients
- 1/2 cup All-purpose flour
- 3/4 cup Unsweetened cocoa powder (dutch process)
- 1 TBSP Cornstarch
- 1/4 tsp Salt
- 1/2 cup Semi-sweet chocolate chips
- 1/2 cup Milk chocolate chips
- 1/2 cup All-purpose flour
- 1 tsp Cornstarch
Instructions
- Preheat Oven: Preheat your oven to 350°F (175°C) to ensure it reaches the right temperature for baking the brownies evenly.
- Prepare Wet Ingredients: In a large mixing bowl, whisk together the white granulated sugar, eggs, and egg yolk until smooth and slightly thickened. Stir in the melted unsalted butter, oil, and pure vanilla extract until fully combined.
- Sift Dry Ingredients: In a separate bowl, sift or whisk together the all-purpose flour, unsweetened cocoa powder, cornstarch, and salt to remove any lumps and blend ingredients evenly.
- Combine Wet and Dry: Gradually fold the dry ingredients into the wet ingredients, mixing gently until just combined to avoid overmixing and keep the brownies fudgy.
- Add Chocolate Chips: Fold in both the semi-sweet and milk chocolate chips evenly to distribute the rich chocolate pieces throughout the batter.
- Prepare Baking Pan: Lightly grease or line an 8×8 inch baking pan with parchment paper. Pour the batter into the pan, spreading it evenly with a spatula for uniform thickness.
- Bake Brownies: Place the pan in the preheated oven and bake for 25-30 minutes, or until a toothpick inserted near the center comes out with moist crumbs but not wet batter.
- Cool and Serve: Once baked, remove the brownies from the oven and allow them to cool completely in the pan on a wire rack before cutting into squares.
Notes
- For extra fudginess, slightly underbake the brownies and allow them to set as they cool.
- You can substitute the milk chocolate chips with white chocolate or peanut butter chips for variety.
- Be careful not to overmix the batter to avoid tough brownies.
- Store brownies in an airtight container at room temperature for up to 4 days, or freeze for longer storage.
Nutrition
- Serving Size: 1 brownie (2-inch square)
- Calories: 220 kcal
- Sugar: 22 g
- Sodium: 90 mg
- Fat: 12 g
- Saturated Fat: 5 g
- Unsaturated Fat: 6 g
- Trans Fat: 0 g
- Carbohydrates: 28 g
- Fiber: 3 g
- Protein: 3 g
- Cholesterol: 55 mg
Keywords: monster cookie brownies, fudgy brownies, chocolate chip brownies, easy brownies recipe, dessert, chocolate dessert