Preheat oven to 450°. Cut a 3-in. circle around each pumpkin stem. Remove tops and set aside. Remove strings and seeds from pumpkins; discard seeds or save for roasting. , In a large skillet, cook sausage, vegetables and garlic over medium heat 6-8 minutes or until sausage is no longer pink, breaking up sausage into crumbles; drain. Remove from heat; stir in rice, 3/4 cup cheese, eggs, parsley, salt and thyme., Place pumpkins in a 15x10x1-in. baking pan; fill with rice mixture. Replace pumpkin tops. Bake 30 minutes., Reduce oven setting to 350°. Bake 25-35 minutes longer or until pumpkin is tender when pierced with a knife and a thermometer inserted in filling reads 160°. Sprinkle remaining cheese over filling. Cut to serve.