These are incredible! I made them for Mother's Day and everyone had seconds. I used Triple Chocolate cake mix, let them cool 20 minutes and used a large star cake tip for the filling. I wasn't sure how to know if enough filling was inside the cupcake, but figured out that if you pipe until the sides puff out a little, that's perfect. Instead of nuts, I piped a little of the leftover filling on top of the cupcake. My new favorite!!!