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| salted butter: 2/3 cup (softened) |
| granulated sugar: 2 cups |
| eggs: 4 |
| lime zest: 2 Tbl |
| key lime juice: 2 Tbl |
| vanilla extract: 1 tsp |
| all-purpose flour (unsifted): 3 cups |
| baking powder: 1 Tbl |
| salt: 1 tsp |
| 2% milk: 1 cup |
| walnuts (chopped): 1 cup |
| powdered sugar (unsifted): 2/3 cup |
| key lime juice: 2 Tbl |
Credit: Food.com