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 matza meal
1/4 Teaspoon coarse salt
4 Large egg whites
8 Ounces chocolate chip
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 stiff. 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.
So yes, I baked these for Passover this year and OMG they are good! Messy to bake but then, I make a mess making toast so it's not an issue.