Ingredients
Method
- Preheat oven to 350°F; parchment-line pan.
- Whisk butter, sugar, and eggs thick and glossy.
- Fold in flour and cocoa into rich batter.
- Stir in both chocolate chips.
- Spread in pan; bake 30 to 32 minutes until just set.
- Cool fully; chill briefly for dense, truffle-like texture.
Notes
Slightly underbake for that gooey truffle center everyone fights over.
