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| cooking spray |
| semisweet baking chocolate squares: 3 oz |
| spinach: 1 cup (pureed) |
| light brown sugar (packed): 1/2 cup (firmly packed) |
| unsweetened cocoa powder (sifted): 1/4 cup |
| margarine (oleo): 2 Tbl |
| vanilla extract: 2 tsp |
| eggs: 2 (whites, large) |
| all-purpose flour (unsifted): 3/4 cup |
| baking powder: 1/2 tsp |
| salt: 1/2 tsp |
Credit: Food.com