Food & Cooking Recipes Lunch Recipes Portobellos with Leeks and Spinach 3.3 (65) 2 Reviews By Martha Stewart Editors Martha Stewart Editors Facebook Instagram Twitter Website An article attributed to "Martha Stewart Editors" indicates when several writers and editors have contributed to an article over the years. These collaborations allow us to provide you with the most accurate, up-to-date, and comprehensive information available.The Martha Stewart team aims to teach and inspire readers daily with tested-until-perfected recipes, creative DIY projects, and elevated home and entertaining ideas. They are experts in their fields who research, create, and test the best ways to help readers design the life they want. The joy is in the doing. Editorial Guidelines Updated on May 16, 2017 Print Share Share Tweet Pin Email Prep Time: 30 mins Total Time: 30 mins Servings: 4 Bake portobello mushroom caps, and fill them with leeks, fresh spinach, and goat cheese. Serve the mushrooms with whole-grain bread. Ingredients 4 portobello mushroom caps 3 tablespoons olive oil 3 tablespoons balsamic vinegar 2 leeks Coarse salt and ground pepper 2 cups chopped fresh spinach (about 2 ounces) 1 cup crumbled soft goat cheese Directions Trim dark-green parts from leeks; slice leeks crosswise, and soak in cold water. Swish leeks to help loosen dirt. Repeat with fresh water until you no longer see any grit at bottom of bowl. Lift leek slices out of water, leaving grit behind; drain them thoroughly on paper towels. Preheat oven to 450 degrees. Place mushroom caps, gill sides up, on a rimmed baking sheet; drizzle with oil and vinegar, and season with salt and pepper. Bake until caps are just tender, about 15 minutes. Top with leeks, spinach, and cheese; season again with salt and pepper. Bake until spinach wilts and cheese starts to brown, 10 to 12 minutes. Print