French Silk Pie is traditionally an icebox cake, so if you want to keep it oven-free, use an Oreo-style no-bake crust. I'd probably take a 270 g pack of Oreos, and put it in the food processor and add about 1/4 cup of melted vegan butter until it forms a dough. Pat that down into your pie or tart pan, and chill for about 30 minutes before you fill it.