Southwestern Beef Chili with Corn

I got this recipe from Real Simple Magazine and it was pretty good!
My changes are in bold.

1tbs olive oil
2 carrots, chopped
1 medium onion, chopped
1 green bell pepper, chopped
1/2lb ground beef (i used 1lb ground turkey)
2tbs tomato paste (i used 4tbs)
2- 15oz cans balck beans, drained and rinsed
1tbs chili powder
kosher salt and pepper
1/2 cup frozen corn, thawed (i used 1 cup, not thawed)
1tbs Cumin
1 dash worcestershire sauce

Shredded cheddar cheese, sour cream and scallions to top.

Heat the oil in a large saucepan over medium-high heat. Add the carrots, onion and pepper and cook stirring, for 3 minutes. Add the beef and cook, breaking it up with a spoon, until it is no longer pink, 3-5 minutes. (I browned the turkey first, separately and added it to the veggies after they had cooked for about 5-6 minutes)
Add the tomato paste and cook, stirring, until it is slightly darkened, 1 minute. Add the beans, chili powder, 3 cups water, 1/2tsp salt, and 1/4tsp pepper. Simmer over medium heat until the vegetables are tender, about 10 minutes. I added the cumin and worcestershire sauce here.
Stir in the corn. Divide among bowls and top with the cheddar, sour cream and scallions.