Whisk together flour, cocoa, baking powder, and salt in a bowl until combined.
Beat together butter and granulated sugar in a large bowl with an electric mixer at medium-high speed until pale and fluffy, about 2 minutes in a stand mixer (preferably fitted with paddle attachment) or 4 minutes with a handheld. Add egg and vanilla, beating until combined. Reduce speed to low, then add flour mixture and mix until combined well. Add chocolate and nuts and mix until just combined. Cover bowl with plastic wrap and chill dough until firm, about 30 minutes.
Put oven racks in upper and lower thirds of oven and preheat oven to 325°F.
Roll 1 scant tablespoon of dough into a 1-inch ball, then flatten slightly with palm of your hand to form a 1/3-inch-thick disk and coat with confectioners sugar. Make more cookies in same manner, arranging them 2 inches apart on ungreased baking sheets.
Bake cookies, switching position of sheets halfway through baking, until they puff up and tops crack slightly, 8 to 10 minutes total, then transfer with a metal spatula to racks to cool completely. Recoat cookies with confectioners sugar.
Cooks' note: Cookies keep, layered between sheets of wax paper or parchment, in an airtight container at room temperature 1 week.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	1424.54 Kcal (5964 kJ)
Calories from fat	821.75 Kcal
		% Daily Value*
Total Fat	91.31g	140%
Cholesterol	232.42mg	77%
Sodium	263.37mg	11%
Potassium	466.79mg	10%
Total Carbs	152.82g	51%
Sugars	105.84g	423%
Dietary Fiber	6.06g	24%
Protein	11.09g	22%
Vitamin C	0.7mg	1%
Vitamin A	0.9mg	30%
Iron	3.1mg	17%
Calcium	85.5mg	9%

Amount Per 100 g
Calories	492.5 Kcal (2062 kJ)
Calories from fat	284.1 Kcal
		% Daily Value*
Total Fat	31.57g	140%
Cholesterol	80.35mg	77%
Sodium	91.05mg	11%
Potassium	161.38mg	10%
Total Carbs	52.83g	51%
Sugars	36.59g	423%
Dietary Fiber	2.1g	24%
Protein	3.83g	22%
Vitamin C	0.2mg	1%
Vitamin A	0.3mg	30%
Iron	1.1mg	17%
Calcium	29.5mg	9%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

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