Ingredients

12 ounces (3 sticks) unsalted butter

2 cups cocoa powder, sifted (natural or Dutch process)

6 eggs

2 cups sugar

2 cups packed light brown sugar

2 tablespoons vanilla extract

2 cups flour

1 teaspoon kosher salt

Preparation

Preheat the oven to 350 degrees. Line a 9-by-13-inch pan with aluminum foil or parchment paper and spray with nonstick cooking oil spray.

Melt the butter in a medium saucepan over medium heat. Remove from the heat and add the cocoa powder, stirring to combine. Let cool slightly.

In a large bowl, whisk the eggs together, then add the sugars and vanilla extract, stirring to combine. Add the cooled butter-chocolate mixture, then fold in the flour and salt until just combined; do not overmix. Spread the batter evenly in the pan, making sure the corners are filled. Bake for 40 to 45 minutes or until a crust forms on the surface and a toothpick inserted into the center comes out mostly clean. Transfer the pan to a wire rack; cool completely before cutting the brownies.

Per brownie: 310 calories, 4 g protein, 46 g carbohydrates, 14 g fat, 83 mg cholesterol, 8 g saturated fat, 108 mg sodium, 2 g dietary fiber

Recipe tested by Leigh Lambert; e-mail questions tofood@washpost.com