Preheat oven to 400°. Cut each squash crosswise in half; remove and discard seeds. Cut a thin slice from bottom of each half to allow each to lie flat. Place on baking sheets, hollow side up; brush tops with 2 tablespoons olive oil. Bake until almost tender, 30-35 minutes., In a large saucepan, combine rice with contents of seasoning mix, broth, sage and thyme. Bring to a boil. Reduce heat; simmer, covered, until rice is tender and liquid is almost absorbed, 23-25 minutes. Meanwhile, in a large skillet, saute celery and onion in remaining oil until tender. Stir in cranberries, pecans and parsley. Remove from heat. Stir in rice mixture., Fill each squash half with about 1/2 cup rice mixture. Return to oven, uncovered, until rice is heated through and squash is tender, 12-15 minutes.