Quintuple Chocolate Brownies

'Baking From My Home to Yours' by Dorie Greenspan

• Ready In: 1 hr 35 mins
• Yields: 16 brownies

Ingredients

• Brownies

• 1⁄2 cup all-purpose flour
• 1⁄4 cup  unsweetened cocoa powder
• 1⁄2 teaspoon salt
• 8  tablespoons unsalted butter, cut into 8 pieces (1 stick)
• 3  ounces  unsweetened chocolate, coarsely chopped
• 3  ounces bittersweet chocolate or 3  ounces  semisweet chocolate, coarsely chopped
• 2  tablespoons  strong coffee
• 1  cup sugar
• 3  large eggs
• 1  teaspoon pure vanilla extract
• 6  ounces  premium  milk chocolate, chopped into chips (of 1 cup store-bought milk chocolate chips)
• 1  cup  chopped  nuts

• Glaze

• 6  ounces  premium white chocolate, finely chopped (or 1 cup store-bought white chocolate chips)
• 1⁄3 cup heavy cream

Directions

1. Position oven rack in center of oven; preheat to 325°.
2. Line a 9-inch square baking pan with foil, butter foil and place the pan on a baking sheet.
3. Sift together the flour, cocoa, and salt.
4. Set a heatproof bowl over a saucepan of simmering water and add, in the following order--butter, the two chocolates and the coffee.
5. Keeping the pan over low heat, warm just until the butter and chocolates are melted; you don't want the ingredients to get so hot they separate, so keep an eye on the bowl.
6. Stir gently, and when the mixture is smooth, set it aside for 5 minutes.
7. Using a whisk or a rubber spatula, beat the sugar into the chocolate mixture; don't beat too vigorously--you don't want to add air to the batter; and don't be concerned about any graininess.
8. Next, stir in the eggs one at a time, followed by the vanilla.
9. You should have a smooth, glossy batter.
10. Using a rubber spatula, gently stir in the dry ingredients, mixing only until they are incorporated.
11. Finally, stir in the milk chocolate chips and the nuts; scrape batter into prepared pan.
12. Bake for about 35 minutes, or until a thin knife inserted into the center comes out streaked but not thickly coated.
13. Transfer the pan to a cooling rack and let the brownies rest undisturbed for at least 30 minutes.
14. Turn the brownies out onto a rack, peel away the foil and place the foil under another rack--it will be the drip catcher for the glaze.
15. Invert the brownies onto the rack and let cool completely.
16. Glaze: add the white chocolate to a heatproof bowl; bring the heavy cream to a boil and pour it over the chocolate.
17. Wait 30 seconds, then using a rubber spatula, gently stir until the chocolate is melted and the glaze is smooth.
18. Hold a long metal icing spatula in one hand and the bowl of glaze in the other.
19. Pour the glaze onto the center of the brownies and use the spatula to nudge it evenly over the surface.
20. Don't worry if it dribbles over the edges, you can trim the sides later (or not).
21. Refrigerate the brownies for about 20 minutes to dry the glaze.
22. Cut into 16 squares.