If I was making individual ones like you want, I would just use graham cracker crumb crust and press with a glass like Tothill suggested. I make this recipe too and it is just wonderful. Here is my recipe for the chocolate glaze if you don't want to use frosting.
1 stick butter
4 tbls cocoa powder
1 tsp vanilla
1 box confectioners sugar
milk to thin about 1/4 to half cup, add just what you need to get consistency you want.
Melt butter add cocoa powder, bring to a boil. Remove from heat and add vanilla and sugar. Add enough milk to make spreadable, pour over cake, refrigerate overnight before serving.