Un-Stuffed Pepper Soup

1 lb ground beef or pork 
2 tbsp oil 
1 large onion, chopped 
2 carrots, chopped 
2 celery sticks, chopped 
2 large bell peppers, one red and one green, chopped 
1 tsp dried oregano 
½ tsp sweet paprika 
2 cups canned whole or chopped tomatoes 
¼ cup rice, uncooked 
Salt and pepper after taste 
8 cups water or beef stock  (I do 4 cups beef broth and 4 cups water)

Heat the oil in a large pot and sauté the onion until translucent. Add the carrots and celery. When the vegetables are softened, add the oregano and paprika, then the meat, breaking it with a wooden spoon. Add the water or beef stock, the peppers and about a teaspoon of salt and some black pepper. Bring to a boil, and then add the tomatoes (if using whole tomatoes, break it with your hands). Let boil for about 15 minutes, add the rice and let boil for another 15 minutes, when the rice and peppers are done.

From here