Mini chocolate krispie bites

Very simple but just thought I'd share. I had a spare 100g block of dark chocolate and thought I'd use it to make some rice krispie cakes. I don't know how much rice krispies I used - I just kept adding until it was at a good consistency.  I only had 3 fairy cake cases left so used the petit fours (very small) cases for the remaining. I thought I may get around 15 or so of these cases but ended up with about 40.

They are good for small bites when you are running around and much less calories (and cost) than eating a chocolate bar.