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Prep Time: 30 Minutes Cook Time: 90 Minutes |
Ready In: 120 Minutes Servings: 16 |
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These rich treats aren't cookie-jar cookiesthey're best the day they're made. Ingredients:
nonstick vegetable oil spray |
1 cup bittersweet chocolate chips (do not exceed 61% cacao; about 6 ounces), divided |
1 1/2 cups powdered sugar, divided |
1/3 cup unsweetened cocoa powder |
2 teaspoons cornstarch |
2 large egg whites, room temperature |
1/2 teaspoon vanilla extract |
1/8 teaspoon cream of tartar |
Directions:
1. Position 1 rack in top third and 1 rack in bottom third of oven and preheat to 350°F. Coat 2 large rimmed baking sheets with nonstick spray. Place 1/2 cup chocolate chips in small microwave-safe bowl. Cook in 15-second intervals until chocolate softens; stir until melted and smooth. Cool chocolate to lukewarm, about 10 minutes. Whisk 1/2 cup sugar, cocoa, and cornstarch in small bowl to blend.
2. Using electric mixer, beat room-temperature egg whites, vanilla, 1/8 teaspoon salt, and cream of tartar in medium bowl until soft peaks form. Add remaining 1 cup sugar in 4 additions, beating just to blend after each addition. Continue to beat until meringue is thick and glossy like marshmallow creme, about 2 minutes longer. Beat in cocoa mixture. Fold in melted chocolate, then 1/2 cup chips.
3. Drop batter by rounded tablespoonfuls onto prepared sheets, spacing 3 inches apart. Bake cookies 7 minutes. Reverse sheets and bake until dry-looking and cracked, about 6 minutes. Cool cookies on sheets 5 minutes. Transfer cookies to racks and cool completely.
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