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| salted butter: 1/2 cup |
| multipurpose shortening: 1/2 cup |
| light brown sugar (packed): 1/2 cup |
| granulated sugar: 1/2 cup |
| eggs: 1 |
| all-purpose flour (unsifted): 2 1/4 cups |
| baking soda: 1/2 tsp |
| cream of tartar: 1 tsp |
| vanilla extract: 1 tsp |
Credit: Food.com