Brown sausage in a skillet and drain excess grease.
Add sausage, broth, garlic, Italian seasoning, Kinder Buttery Garlic seasoning, onion powder, and cream cheese to crockpot.
Cook on HIGH for 1½ hours, until cream cheese is melted.
Stir well, then add tortellini, heavy cream, and shredded cheddar.
Cook on HIGH for 30 minutes, until tortellini is tender and cheese is fully melted.
Stir in spinach during the last 10 minutes, if using.
Season with salt and pepper to taste before serving.
