Or even frozen, defrosted, peas with mint make a nice topping. Goat cheese, fig and mint. Grilled eggplant puree with mint. Brie, pear and topped with a mint chiffonade. Fava bean puree with onion, chives and mint.
Mushrooms go great with mint. I would finely chop mushrooms, saute with garlic, olive oil, onions if you like, maybe some wine, then add some soaked and minced dry porcini for depth of flavor, and at the end chopped mint. Something like that.