Oxymoron? Smiley face (fiddleheads are a northeastern thing). But it is a great way to prepare them since most recipes I know are rather bland, but this one is not at all. It is more the Eva Mendes form of fiddleheads.
Start with spicy olive oil (I bought a fiery hot harissa olive oil at Fiore), add some spicy chili flakes (1/2 tablespoon), some fresh grated or granulated garlic, and heat up. Add the kernels of a fresh chucked ear of corn, and a pinch of salt. Saute for ca. 3 min. Add precooked fiddleheads, and heat through (2min). Serve! It is a great side to any steak or hamburger. Great also with a cup of cooked quinoa.