Cocoa Brownies with Browned Butter and Walnuts

Why do I do this to myself? These brownies are deliciously addicting. As soon as I saw the cover of my Bon Appetit magazine I knew I had to try these. I didn't think I would make them twice in one week but hey a pregnant gal has her cravings. I used dark chocolate cocoa powder because that is what I have at the house. It makes these brownies extra decadent. Be warned, you will want more than one, maybe even the whole batch so don't make these alone! I also noticed that the timing is off on the recipe. It says to cook for 25 minutes but I think it takes more like 35-40. See for yourself but make sure to check them at 25 min. in case our oven temps differ.
Ingredients
Nonstick vegetable oil spray

10 tablespoons (1 1/4 sticks) unsalted butter, cut into 1-inch pieces

1 1/4 cups sugar

3/4 cup natural unsweetened cocoa powder (spooned into cup to measure, then leveled)

1 teaspoon vanilla extract

2 large eggs, chilled

1/3 cup plus 1 tablespoon unbleached all purpose flour

1 cup walnut pieces

Directions

Position rack in bottom third of oven; preheat to 325°F. Line 8x8x2-inch metal baking pan with foil, pressing foil firmly against pan sides and leaving 2-inch overhang. Coat foil with nonstick spray. Melt butter in medium saucepan over medium heat. Continue cooking until butter stops foaming and browned bits form at bottom of pan, stirring often, about 5 minutes. Remove from heat; immediately add sugar, cocoa, 2 teaspoons water, vanilla, and 1/4 teaspoon (generous) salt. Stir to blend. Let cool 5 minutes (mixture will still be hot). Add eggs to hot mixture 1 at a time, beating vigorously to blend after each addition. When mixture looks thick and shiny, add flour and stir until blended. Beat vigorously 60 strokes. Stir in nuts. Transfer batter to prepared pan.

Bake brownies until toothpick inserted into center comes out almost clean (with a few moist crumbs attached), about 25 minutes. Cool in pan on rack. Using foil overhang, lift brownies from pan. Cut into 4 strips. Cut each strip crosswise into 4 brownies. DO AHEAD Can be made 2 days ahead. Store airtight at room temperature.