In top of double boiler, placed over simmering water, melt chocolate. Stir in Sweetened condensed Milk. Remove from heat. Stir in remaining ingredients. Turn into greased, waxed paper Or metal foil-lined and greased again 8x8" pan. Bake in 375~ oven until toothpick inserted in center comes out clean, about 25 minutes. Turn out of pan onto cake rack. Peel off paper. Cool. With sharp knife cut into 2" squares.