Easy Crockpot Smoked Sausage with Rich Gravy

Ingredients

• 1.5 lbs smoked sausage, sliced into 1/2-inch pieces
• 1 medium onion, chopped (about 1 cup)
• 2 cloves garlic, minced
• 3 medium carrots, sliced (about 1.5 cups)
• 2 stalks celery, sliced (about 1 cup)
• 1 (14.5 oz) can diced tomatoes, undrained
• 2 cups low-sodium chicken broth
• 3 tablespoons all-purpose flour
• 2 tablespoons Worcestershire sauce
• 1 teaspoon dried thyme
• 1 teaspoon smoked paprika
• Salt and pepper to taste
• 2 tablespoons fresh parsley, chopped (for garnish)