Roasted Poblano Beef Stew

poblano peppers

boneless beef chuck roast (2.5 to 3 pounds), cut into 1-inch cubes

olive oil

medium onion, chopped

garlic cloves, minced

beef broth

of diced tomatoes (I used Hunts Fire Roasted with garlic)

minced fresh cilantro

Worcestershire Sauce

chili powder

salt

ground cumin

red pepper flakes

freshly ground black pepper

large potatoes, peeled and cut into 1-inch cubes