hearty bean soup

Ingredients

• 5 cans great northern beans, drained but not washed
• 8 cups chicken broth
• 8 ounces tomato sauce
• 1 tablespoon tomato paste
• 2 - smoked ham hocks
• 1 - 8 oz. package of pre-cubed ham
• 2 - carrots, sliced small
• 2 - ribs of celery, sliced
• 2 - bay leaves
• 1 1/2 teaspoons garlic powder, or more to taste
• 1 - rounded half tsp. cumin
• 1 tablespoon butter
• 1 large onion, diced