Beef and Sweet Potato Chili

1 tablespoon olive oil
1 pound ground beef
2 cups chopped onion
1 medium serrano chile, seeded and finely chopped
3 cloves of garlic, minced
1 can (28 oz) fire roasted diced tomatoes, undrained
1 cup Beef Bone Broth
1 large sweet potato, peeled and cut into 3/4 inch chunks (2 cups_
1 cup chopped red bell pepper
2 tablespoons chili powder
1/2 teaspoon ground chipotle chili pepper
1/2 teaspoon salt, plus more as needed
Chopped fresh cilantro (optional)
Sliced green onions (optional)

Heat the olive oil in a large pot over medium-high heat. Add the ground beef, onion, serrano chile, and garlic and cook, stirring frequently and breaking up the meat with a wooden spoon, until the meat is browned, about 5 minutes

Stir in the tomatoes with their juices, broth, sweet potato, bell pepper, chili powder, chipotle and salt and bring to a boil. Reduce the heat to low, cover and simmer stirring occasionally until the sweet potato is tender., 20-25 minutes. If desired, season with additional salt. Serve the chili topped with cilantro and green onions if desired.