When Candlemas came around, my grandmother would sometimes prepare a savoury dish that looked, from a distance, like a lasagne... but with pancakes instead of pasta. The result? A melting, generous, comforting dish. Yes, it's a festive dish. It takes a little time to make the crêpes, the filling and the béchamel sauce. But the result is worth it - especially if you prepare it the day before. Unlike my grandmother, who used to assemble this cake in a simple round dish, I use a pastry ring for a neater presentation. She would have loved this variation.