Mediterranean Stuffed Zucchini
### Ingredients - 1 extra-large zucchini, halved lengthwise - 1 tablespoon olive oil - 1 sweet onion, chopped - 1 tablespoon chopped garlic - 1 pound ground lamb - Coarse salt, to taste - Ground black pepper, to taste - 1 (16-ounce) can tomato sauce - 2 tomatoes, chopped - ¾ cup crumbled feta cheese ...