Preheat oven to 375 degrees. Cream butter and sugar. Add one egg at a time and mix well. Stir in coffee and vanilla. Add dry ingredients, alternating with heavy cream. Add chocolate. Pour into a greased 9x13-inch baking pan. Smooth out top and sprinkle Topping over batter.
Bake 25-30 minutes until toothpick inserted in center comes out clean. Cool 10 minutes before serving.
With a fork, mix together sugar, molasses, flour, ground coffee, and butter until crumbly. Stir in chocolate and nuts, if desired.