I realize it's a significant and common problem: what to do with leftover matzo meal? Instead of keeping it and hoping it won't go stale before next Passover (unlikely), I recommend using it to make these cookies. Passover or not, these are delicious and very satisfying.
The recipe is from Susie Fishbein's Passover by Design cookbook and she credits the original recipe to Rivki Shaulson. Sounds authentic to me.
As usual, easy to make.
Giant Zebra Fudge Cookies
1/2 cup vegetable oil
2 cups sugar
2 cups matzo meal
2 cups good quality Dutch process cocoa powder
4 large eggs
1 tsp vanilla extract
2 tsp baking powder
confectioner's sugar, sifted
1. Preheat oven to 350 degrees.
2. Line 2 large cookie sheets with parchment paper and set aside.
3. In the bowl of an electric stand mixer, mix the oil, sugar, matzo meal, cocoa powder, eggs, vanilla and baking powder until a soft dough forms.
4. Roll the dough into 18 balls slightly larger than golf balls.
5. Fill a small bowl with confectioner's sugar and stir with a fork to break up any clumps. Lower the balls, one at a time, into the confectioner's sugar and toss to coat heavily and completely. Transfer to prepared cookie sheets. Leave room between the dough balls, as the cookies spread during baking.
6. Bake for 18 minutes. If you like smaller cookies, form walnut sized dough balls and bake for 12 minutes.
7. Cool completely.