Combine Ingredients: In your crockpot, mix together the low-sodium chicken broth, fire-roasted diced tomatoes, and Italian seasoning. Set your crockpot to low and bring it to a gentle simmer for about 10 minutes.
Add Sausage: Stir in the browned ground sausage, ensuring it’s well-distributed throughout the mixture.
Incorporate Tortellini: Gently add the frozen tortellini to the pot. Cover and cook for 15-20 minutes, or until the tortellini floats to the top.
Melt the Creaminess: In the last 10 minutes of cooking, add the cream cheese, minced garlic, diced onion, and fresh spinach. Stir until the cream cheese is melted.
Season to Taste: Finally, add salt and black pepper to your liking, mixing well.