In a large saucepan, heat olive oil over medium heat. Add leeks, shallots, garlic, mussels, white wine, and lemon and saute over until the mussels open. Season with salt and pepper, and then add butter and tomatoes. Continue cooking until the butter is melted, carefully tossing to combine. Sprinkle with thyme and parsley, adding more, to taste, if desired. Serve immediately.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.