- Level: Easy
- Total: 1 hr 30 min (includes cooling time)
- Active: 15 min
- Yield: 8 to 10 servings
Ingredients
Nonstick cooking spray, for spraying the baking pan
1 cup granulated sugar
1 cup dark brown sugar
2 teaspoons vanilla extract
1/2 teaspoon kosher salt
2 large eggs plus 2 yolks
1 stick (8 tablespoons) unsalted butter, melted
8 ounces semisweet chocolate chips
1/2 cup vegetable oil
1 1/4 cups all-purpose flour
1/4 cup cocoa powder
Directions
- Preheat the oven to 350 degrees F. Line a 9-by-13-inch baking pan with parchment paper and spray with cooking spray.
- Combine the granulated sugar, brown sugar, vanilla, salt, whole eggs and yolks in a large bowl; set aside.
- Melt the butter and chocolate in a double boiler, then whisk together until fully combined. Mix in the vegetable oil. Pour the chocolate mixture into the sugar mixture and mix until fully combined. Fold in the flour and cocoa.
- Pour the batter into the prepared pan and bake until a toothpick inserted in the center comes out clean, 30 to 35 minutes. Let cool completely before slicing.
