Ingredients
- 1 cup (225g) unsalted butter, melted and slightly cooled
- 1 cup (200g) granulated sugar
- 1 cup (220g) packed light brown sugar
- 2 large eggs, at room temperature
- 2 teaspoons vanilla extract
- 1 cup (125g) all-purpose flour
- ¾ cup (75g) unsweetened cocoa powder
- ½ teaspoon baking soda
- ½ teaspoon salt
- ¾ cup (200g) creamy peanut butter, divided
- ½ cup (90g) semi-sweet chocolate chips (optional, for extra richness)
Substitution tips: If you’re gluten-free, you can swap the all-purpose flour for a 1:1 gluten-free baking flour blend—just make sure it includes xanthan gum for structure. For a dairy-free version, use coconut oil instead of butter, but keep in mind this might slightly alter the texture. And if you prefer crunchy peanut butter for a bit of texture, go for it—my mum often added a pinch of nostalgia with her favourite crunchy jar.
Instructions
- Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper. A well-prepped baking tray is the foundation of good cookies — I’ve learned that from many a sticky-fingered morning in my mum’s kitchen.
- In a large bowl, whisk together the melted butter with the granulated and brown sugars until smooth and glossy, about 2-3 minutes. This step sets the stage for your cookies’ tender crumb.
- Add the eggs one at a time, beating well after each addition, then stir in the vanilla extract. I always let my eggs come to room temperature first — it helps everything blend more harmoniously, a little trick my mum shared when I was ten and still mastering the whisk.
- In a separate bowl, sift together the flour, cocoa powder, baking soda, and salt. This ensures no lumps sneak into your batter, just like the smoothness of a well-tended kitchen.
- Gradually fold the dry ingredients into the wet mixture until just combined — resist the urge to overmix or you’ll end up with tougher cookies, a lesson learned after one too many chewy batches in my early baking days.
- Gently fold in the chocolate chips, if using. These add delightful pockets of melted chocolate, making these cookies even more indulgent.
- In a small bowl, warm the peanut butter slightly to make it more pliable — a quick 15 seconds in the microwave usually does the trick. Dollop spoonfuls of peanut butter onto the brownie batter and use a butter knife or skewer to swirl it through the dough in a marbled pattern. Don’t over-swirl; you want distinct ribbons of peanut butter and chocolate.
- Using a tablespoon or cookie scoop, drop mounds of the swirled dough onto your prepared baking sheets, spacing them about 2 inches apart to allow for spreading.
- Bake for 10-12 minutes, until the edges are set and the centers look slightly soft but not wet. The smell at this point is divine — one of those moments I find myself sneaking a quick taste of warm dough (don’t tell Mum!).
- Allow the cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely. They’ll firm up as they cool, giving you that perfect chewy yet tender bite.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Main Dish
- Method: Cooking
- Cuisine: International
