To prepare a strawberries and creme fraiche desserts recipe, first you need to prepare the ingredients. First, you'll need the strawberries. You can buy fresh or frozen strawberries at your local grocery store. Then, cut the fresh strawberries in half, and then cut them into quarters. Now, add the sugar to the melted butter and stir until it's fully incorporated. Finally, stir in the vanilla and the egg yolks until they're fully combined. If you don't have vanilla, then you can use vanilla extract.