I mainly use fromage frais in pasta sauces and dips for snacks and starters. You can mix fromage frais and plain yogurt with different spices to be served with salty snacks. You can also combine fromage fraise with other light cheeses like ricotta and cottage cheese.
I've also made a filling with fromage frais and fruit for a sponge cake which turned out very good. I think that for desserts, fromage frais goes extremely well with fruits like strawberries, cherries, peaches and berries. I love to build upon old recipes with fresh fruits and replace the cream or milk with fromage frais for a fresh and tart flavor.