It sounds to me like it might be sugar pie (Quebec Sugar Pie Recipe - Allrecipes.com
I was given this recipe by the chef at the Le Bon Accueil in Rivere Madeleine, Quebec:
2 c brown sugar (1/2 golden, 1/2 dark)
1 c evaporated milk
2 T hot, melted butter
dash of vanilla
1 pie crust, prebaked at 350 for 6-8 minutes.
1.Mix the sugar and evaporated milk together, blend in melted butter.
2. Pour mixture in the pie shell. Bake for 15-20 minutes until set. This is VERY, VERY rich. Can be served warm or at room temperature.
When I would serve this to my friends in Quebec, the response was it was better than their moms' or grandmas' recipes.