slower cooker tomato basil parmesan soup

Ingredients

• 2 cans 14 oz cans diced tomatoes with juice
• 1 cup celery, finely diced
• 1 cup carrots, finely diced
• 1 cup onions, finely diced
• 1 teaspoon oregano, dried or 1 tbs fresh
• 1 tablespoon basil, dried or 1/4 cup fresh
• 4 cups chicken stock (or veggie if so desired)
• 1 sprig bay leaf
• 1/2 cup flour
• 1 cup parmesan cheese
• 1/2 cup butter
• 2 cups half and half, warmed
• 1 teaspoon salt
• 1/4 teaspoon pepper