Preheat oven to 325 degrees. Place butter and brown sugar in a medium sauce
pan. Bring to a boil over medium-high heat and boil for 2 minutes.
Stir in pecans. Grease sides and bottom of a jelly roll pan with butter or
margarine. Completely cover pan with a single layer of matzo. Spoon
butter mixture over matzo and spread evenly. Bake until very crisp, about 12
minutes. Cool in pan and break into pieces.