Recipe information
Total Time
1 1/4 hr
Yield
Makes 32 (2-inch) squares
Ingredients
2
sticks (1/2 pound) unsalted butter
8
ounces fine-quality bittersweet chocolate (no more than 60% cacao if marked)
2
cups sugar
1
teaspoon pure vanilla extract
5
large eggs
2
/3 cup all-purpose flour
1
/3 cup unsweetened Dutch-process cocoa powder
1
/2 teaspoon salt
Need to make a substitution?
Preparation
Step 1
Preheat oven to 350°F with rack in middle. Butter and flour a 13- by 9-inch baking pan.
Step 2
Melt butter and chocolate in a 3-qt heavy saucepan over low heat, stirring, until smooth. Remove from heat and cool to lukewarm. Whisk in sugar and vanilla. Whisk in eggs 1 at a time until mixture is glossy and smooth.
Step 3
Whisk together flour, cocoa powder, and salt, then whisk into chocolate mixture until combined.
Step 4
Spread in pan and bake until a pick inserted in center comes out with crumbs, 25 to 35 minutes. Cool completely.