Penne with Asparagus and Mushrooms Ingredients 12 ounces Mini Penne Pasta 4 tablespoons vegan Margarine, divided 2 tablespoons extra-virgin olive oil 1/2 cup thinly sliced shallots (about 4) 1 pound fresh mushrooms, stemmed, sliced 6 tablespoons fresh lemon juice 1 3/4 cups vegetable broth 1 tablespoon grated lemon peel 1 pound asparagus, tough ends trimmed,