I need to make a Chocolate cake that has a chocolate buttercream on the outside of the of the cake and I need to put strawberries for the filling. My question is should I do a pastry cream and put the strawberries on top of that or should a do the chocolate buttercream on the inside too? Or should I do just a strawberry filling and if so how do I keep it from seeping into the cake?
THANK YOU SO MUCH for any advice.

Not sure if you or anyone else would do the same, but here's what I do. First I put a very thin layer of buttercream (just enough to cover the cake) on the cake, then I add a frosting dam (so the filling doesn't seep out), then I add a layer of strawberry glaze (can be found at your local grocery store near the fruit), then I lay down my freshly cut strawberries. Tastes delicious! HTH!