Preheat oven to 350 degrees.
For a milder onion flavor, saute onions in a little butter or olive oil for a few minutes until tender. This is an optional step.
Mix together rice, ground beef, onions, salt, herbs, 1 clove garlic, and ½ cup tomato sauce.
Fill peppers generously.
For the sauce, mix 1 cup of tomato sauce, ¼ cup chopped fresh herbs, 1 cloves minced garlic, and salt to taste.
Pour sauce in bottom of a 9x13 baking dish.
Place stuffed peppers on top.
Bake at 350 for approx. 40 mins. or until internal temperature has reached 160 degrees F.
Top with mozzarella cheese if desired and place under broiler until golden. When serving, pour sauce on top of peppers.