Cut tops off peppers, and remove seeds. Cook tops and bottoms of peppers in boiling water 5 minutes.
Drain peppers; set aside.
Preheat oven to 35
Cook ground round, onion, and garlic in a large nonstick skillet over medium heat until meat is browned, stirring until it crumbles; drain. Wipe drippings from skillet with a paper towel. Return meat mixture to skillet, and add rice and remaining 6 ingredients. Cook 3 minutes or until thoroughly heated, stirring occasionally.
Spoon meat mixture evenly into pepper shells, and replace tops; place stuffed shells in an 8-inch square baking dish.