You’ll Need:1 (6 ounce) package long-grain and wild rice mix, prepared according to package directions 1 tablespoon vegetable oil 2 boneless skinless chicken breast halves, chopped 2 cups sliced fresh mushrooms 1 1/4 cups chopped onion 2 cloves garlic 2 (14.5 ounce) cans chicken broth 1/2 teaspoon dried tarragon 1/4