Tuna steak's firm texture and mild to moderate flavor are just a couple of reasons why it's so popular, from gourmet restaurant meals and sushi to canning (by the way, before we start talking about cooking fresh tuna, here's how to cook with canned tuna ). Chefs love getting creative with cooking tuna, but even novice home cooks can learn how to cook tuna steaks on a grill, in the oven, or on the stove. Let's dive in, and get ready for the tastiest tuna steak, no matter the cooking method you choose.