- 2 sticks unsalted butter, plus more for pan
- 8 ounces bittersweet chocolate chips
- 1 1/4 cups all-purpose flour
- 1 teaspoon baking powder
- Pinch salt
- 4 large eggs
- 2 cups sugar
- 2 tablespoons amaretto liqueur
- 1 1/2 cups walnuts
- Powdered sugar, for garnish
Preheat oven to 350 degrees F.
Line a 9 by 9 square baking pan with parchment paper, making sure paper hangs over the edges. Grease paper with butter so the brownies don't stick. Melt butter and chocolate over a double-boiler and stir gently until smooth and shiny. Remove from the heat and cool slightly.
Sift together flour, baking powder, and salt into a mixing bowl and set aside. Whisk together eggs, sugar and amaretto in a mixing bowl until combined. Pour in chocolate mixture and continue to whisk until combined. Gradually add flour mixture, then add walnuts and incorporate with a wooden spoon. Transfer batter to baking pan and bake for 40 to 45 minutes or until a cake tester comes out clean when inserted into the middle of the pan. When done, invert onto a cutting board, remove paper and cut into squares. Garnish with powdered sugar and serve.