1 package boneless, skinless chicken breasts (1-1 1/3 pounds), diced
Coarse salt and black pepper
1/2 teaspoon crushed red pepper flakes
3-4 tablespoons extra virgin olive oil (EVOO)
2 russet potatoes, peeled and cubed into 1-inch squares
4 portobello mushroom caps or 16 crimini mushrooms, sliced or chopped
4 ribs celery hearts, chopped
1 medium onion, peeled and quartered lengthwise, then thinly sliced
1 red bell pepper, seeded and quartered lengthwise, then thinly sliced
4 cloves garlic, chopped
1/2 cup dry Italian red wine (eyeball it)
1 can diced tomatoes (15 ounces)
1 can fire-roasted crushed tomatoes (28 ounces)
2 cups chicken stock
3 tablespoons fresh rosemary (3-4 sprigs), finely chopped
1 cup basil or arugula or baby spinach leaves, shredded or torn
Grated Parmigiano Reggiano or Romano cheese, to pass at table
Crusty bread, to pass at the table
Heat a deep skillet or a medium soup pot over medium-high heat. Add two tablespoons EVOO, two turns of the pan, and the chicken. Season it with coarse salt and pepper and red pepper flakes.
While the chicken cooks, chop up the veggies.
When the chicken is evenly and lightly browned all over, about 3-4 minutes, remove it to a plate and reserve.
Add another tablespoon of EVOO, one more turn of the pan. Add the potatoes to the pan. Cook a couple of minutes, then add in the mushrooms, celery and onion and cook another couple of minutes. Add in the peppers and garlic and cook another 1-2 minutes. Season the vegetables with salt and pepper.
Add chicken back to the pan. Toss it with the vegetables. Add red wine to the pan and deglaze it, picking up drippings. Add tomatoes and stock to the stoup and stir to combine. Stir in rosemary and reduce heat to low. Cover and cook, 8-10 minutes.
Turn off stoup and ladle into shallow bowls. Top with basil (for a sweet finish and to balance the spice in the soup) or arugula (for a peppery finish) or with spinach (for a woodsy finish). At the table, pass grated cheese for sprinkling on top of the stoup and bread for mopping up the bowl.