Prep: Preheat oven to 375°F (190°C). Cut tops off peppers and remove seeds.
Sauté: In a pan, sauté onion and garlic in 2 tbsp olive oil. Add beef and brown.
Mix: Stir in rice, half the tomatoes, herbs, and spices. Simmer for 5 mins.
Fill: Stuff peppers 3/4 full and place in a baking dish.
Sauce: Mix remaining tomatoes with 1/2 cup water and pour into the dish. Drizzle peppers with remaining olive oil.
Bake: Cover with foil. Bake for 45 mins. Uncover and bake 10-15 mins more.
Rest: Let stand for 10 minutes before serving.