The Pioneer Woman's hamburger soup ingredients include ground chuck, tomatoes, onions, potatoes and carrots as well as garlic, bell peppers, celery and tomato paste. The recipe also calls for various herbs and spices, such as parsley and oregano, as well as salt and pepper.
To make the Pioneer Woman's hamburger soup, cook 2 1/2 pounds of ground chuck at medium-high heat in a pot along with a diced onion, two cut celery stalks and three minced garlic cloves. Once the meat browns, drain the grease, and stir in a 14.5-ounce can of whole tomatoes and 3 cups of beef stock. Add the rest of the vegetables to the pot: a seeded and diced yellow bell pepper, a seeded and diced red bell pepper, a seeded and diced green bell pepper, four diagonally sliced carrots and five chunked red potatoes. Stir in 3 tablespoons of tomato paste, and season the soup with 1/2 teaspoon of kosher salt, 1/2 teaspoon of black pepper, 1/4 teaspoon of cayenne pepper, 2 teaspoons of dried parsley flakes and 1/2 teaspoon of ground oregano.
Bring all the ingredients to a boil, and then simmer the soup covered for up to 20 minutes until the vegetables are tender. Add more broth to thin out the soup if desired.