These ultra-fudgy brownies are rich, gooey, and packed with dark and white chocolate chunks. Baked in a standard 9×13-inch pan and finished with a golden butterscotch drizzle, they’re the perfect cozy treat.
If you’re looking for the kind of brownies that make people stop mid-bite and say “whoa”, you’ve just landed on your signature bake. These thick, fudgy brownies come together in one bowl and are baked in a standard 9×13-inch pan for that perfect slab-style indulgence. They’re loaded with melty dark chocolate, sweet white chocolate chunks, and a handful of toasted walnuts (optional but delightful). The crackly top is that glossy, paper-thin magic layer we all chase. But the twist? A warm butterscotch drizzle that takes them over the top.

🍰 Why You’ll Love These Brownies
- Fudgy center + shiny top: Everything a brownie should be
- No special ingredients: Made with pantry staples and cocoa powder
- Crowd-sized batch: Bakes in a 9×13-inch (or 26×22 cm) pan
- Mix-ins galore: Melty dark chocolate, sweet white chocolate, toasted nuts
- Optional butterscotch drizzle: Golden, gooey perfection
Key Ingredients You’ll Need
- Unsalted butter: For richness and chew
- 70% dark chocolate: Melted into the batter for depth
- White chocolate chunks: Stirred in for sweet contrast
- Cocoa powder: Adds extra richness and intense flavor
- Eggs + sugar: Whipped to create that glossy crackly top
- Toasted walnuts (optional): For crunch and warmth
- Simple butterscotch sauce: Butter, brown sugar, cream, vanilla, and salt

Tips for Perfect Brownies
Whip your eggs and sugar well: 1–2 minutes of vigorous whisking after adding eggs gives the big volume.
Do not overbake: Fudgy brownies need to come out when a toothpick has moist crumbs—not totally clean.
Chill to slice: For clean, bakery-style cuts, chill the full pan before slicing.
FAQ
Can I add nuts?
Yes, you don’t have to change anything in the batter.
How do I store the brownies?
Once fully cooled, store in an airtight container at room temp for 3–4 days or in the fridge for up to a week. They also freeze beautifully (wrap individually and freeze for up to 2 months).
Do I need a mixer?
Nope! You can make the whole batter with just a whisk and spatula.
🧊 Storage Tips
- Room temp: 3–4 days in an airtight container
- Fridge: Up to 1 week (great for dense texture lovers)
- Freezer: Wrap tightly in plastic, freeze up to 2 months. Thaw in the fridge overnight.

Ingredients
Yield: 12-16 brownies
Pan: 9×13-inch or 26×22 cm
Bake Time: 25–30 minutes
Total Time: ~1 hr + cooling
For the Brownies
- 225g (1 cup) unsalted butter
- 200g (7 oz) 70% dark chocolate, chopped or chips
- 250g (1 ¼ cups) granulated sugar
- 100g (½ cup, packed) light brown sugar
- 4 large eggs, room temperature
- 1 ½ tsp vanilla extract
- 70g (¾ cup) unsweetened cocoa powder
- 120g (1 cup) all-purpose flour
- ½ tsp salt
- 100g (3.5 oz) white chocolate, chopped
- Optional: 100g (3.5 oz) toasted walnuts, chopped
For the Butterscotch Drizzle
- 60g (¼ cup) unsalted butter
- 100g (½ cup, packed) brown sugar
- 120ml (½ cup) heavy cream
- ½ tsp vanilla extract
- Pinch of salt
Directions
- Prep & Preheat
- Preheat oven to 170°C (340°F). Grease and line a 26×22 cm (or 9×13-inch) pan with parchment paper, leaving overhang.
- Melt chocolate + butter
- In a large bowl, melt butter and dark chocolate together over a double boiler or in short microwave bursts. Stir smooth and let cool for 10 mins.
- Whisk eggs + sugar
- Add both sugars and eggs into a bowl and whisk well. Add vanilla. Whisk for 1–2 minutes until glossy—this step gives the crackly top.
- Add the cooled chocolate-butter mixture to the whipped eggs and sugar and mix gently.
- Add dry ingredients
- Sift in cocoa powder, flour, and salt. Fold until mostly combined.
- Mix-ins
- Fold in white chocolate chunks (and any optional mix-ins).
- Bake
- Spread batter into pan. Bake for 25–30 minutes until the top is shiny and crackled, edges are set, and a toothpick comes out with moist crumbs (not raw batter).
- Cool & Chill (Important!)
- Cool in the pan for 20–30 minutes.
- Move to the fridge (covered or uncovered) and chill for 1 hour before slicing. This helps set the texture and gives cleaner cuts.
- Make the butterscotch sauce
- In a small pan, melt butter and brown sugar.
- Stir until sugar dissolves.
- Add cream slowly, stir continuously.
- Let simmer 3–4 mins until slightly thickened.
- Remove from heat, add vanilla and salt.
- Let cool slightly before drizzling.
- Slice & Serve
- Cut brownies into squares and serve with a drizzle of warm butterscotch sauce. Optional: sea salt flakes on top.
What’s New

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Notes
Want a deeper chocolate flavor? Add 1 tsp espresso powder to the dry mix.
For thicker brownies, don’t spread to edges—leave a border to pile the batter higher.
These are even better the next day once the flavors settle.

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