Ingredients
1/2 stick (4 tablespoons) unsalted butter or nondairy margarine, room temperature
3/4 cup packed light-brown sugar
2 large egg yolks
1 teaspoon vanilla extract
8 ounces bittersweet chocolate, melted
1/2 cup matzo meal
1/4 teaspoon coarse salt
4 large egg whites
8 ounces semisweet chocolate chips
Preparation
Preheat oven to 350 degrees. Beat butter or margarine and sugar with a mixer on medium-high speed until fluffy. Beat in egg yolks and vanilla. Add chocolate, matzo meal, and salt. Beat until mixture just comes together. (It should be thick.)
In a clean bowl and with a whisk attachment, beat egg whites until stiff peaks form. Gently fold into chocolate mixture. Add chocolate chips, and stir. Let stand 15 minutes.
Scoop 2-inch balls onto a parchment-lined baking sheet. Bake until set, 10 to 12 minutes. Let cool on sheet on a wire rack for 2 minutes. Transfer cookies to rack, and let cool completely.
