Beat all ingredients but last two together for 4 minutes. Pour into greased 9x13 pan. Bake in preheated oven for 30-35 minutes.
Cool 25 minutes. Invert on rack and cool completely. Combine confectioner's sugar and 3 T of lemon juice. Pierce cake with fork or bamboo skewer. Pour glaze over cake.
mix. For Passover, save the packages of chocolate frosting mix and add them to brownie mix or recipe to increase the fudgy-ness.