These rich treats aren't cookie-jar cookies—they're best the day they're made.
Recipe information
Total Time
2 hours (includes cooling time)
Yield
Makes about 16
Ingredients
Preparation
Step 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.
Step 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.
Step 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.
Recipe notes
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