Food & Cooking Recipes Healthy Recipes Gluten-Free Recipes Green Beans with Caramelized Onions and Tarragon 3.0 (312) 1 Review By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on May 16, 2017 Print Rate It Share Share Tweet Pin Email Prep Time: 40 mins Total Time: 50 mins Servings: 8 This dish is great served at room temperature, which means more space in the oven for turkey and other sides come Thanksgiving. Ingredients 1 tablespoon plus 1 teaspoon extra-virgin olive oil 2 large sweet onions, such as Vidalia (about 1 ¼ pounds), thinly sliced Coarse salt and ground pepper 2 pounds green beans, trimmed 4 teaspoons chopped fresh tarragon leaves Directions In a large nonstick skillet, heat 1 tablespoon oil over medium-high. Add onions and season with salt and pepper. Cook, stirring often, until softened and just beginning to brown, 10 minutes. Reduce heat to medium; cook, stirring occasionally, until onions are deep golden brown and very soft, 30 minutes. (Refrigerate in an airtight container, up to 1 day. Bring to room temperature before using.) Meanwhile, in a large pot of boiling salted water, cook green beans until crisp-tender and bright green, about 6 minutes. Drain and toss with tarragon and 1 teaspoon oil; season with salt and pepper. Transfer beans to a platter and top with onions. Cook's Notes Cooking onions until they are golden brown, or caramelized, both deepens and amplifies their flavor. They're delicious on green beans, but also on pizza, baked potatoes, or steaks, and hamburgers. You may want to make a double batch, in fact, since they're an easy way to dress up any meal. Rate it Print