How to Make It
In a large skillet, heat the vegetable oil until nearly smoking. Add the ground sirloin, 1 1/2 tablespoons of salt and 1 tablespoon of pepper and cook over moderately high heat, stirring occasionally, until the meat is browned, about 8 minutes. Using a slotted spoon, transfer the meat to a slow cooker. Add the diced tomatoes and their juices along with the beans, onions, chopped cilantro, jalapeños, garlic, cumin, chili powder, oregano and 6 1/2 cups of water. Cover and cook on high for 6 hours, until the beans are tender.
Skim any fat from the surface of the chili and season with salt and pepper. Garnish with cilantro leaves and serve with scallions, cheddar and sour cream.