Microwave: Place beans in a large glass baking dish. Add 1⁄4 cup broth (or water). Cover and microwave on High for 4 minutes.
Roast: Preheat oven to 500°F. Spread beans on a baking sheet or in a pan large enough to hold them in a single layer. Coat with 1 tablespoon extra-virgin olive oil. Roast, turning once halfway through cooking, until tender and beginning to brown, about 10 minutes.
Sauté: Heat 2 teaspoons walnut oil in a large skillet. Add beans; cook, stirring constantly, for 2 minutes.
Steam: Place beans in a steamer basket over 1 inch of water in a large pot set over high heat. Cover and steam for 5 minutes.