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| salted butter: 1 cup |
| granulated sugar: 1 cup |
| light brown sugar (packed): 1 cup |
| unsweetened cocoa powder (sifted): 3/4 cup |
| eggs: 3 (large) |
| all-purpose flour (unsifted): 1 cup |
| baking powder: 1 1/2 tsp |
| vanilla extract: 1 1/2 tsp |
| walnuts (chopped): 1 cup (chopped) |
Credit: Food.com