In a large pot, add the buffalo wing sauce, chicken broth, and diced tomatoes. Bring to a simmer over medium-high heat.
Stir in the ranch dressing mix and cream cheese, whisking until the cream cheese has fully dissolved.
Add the cheddar cheese and stir until melted and smooth.
Stir in the cooked chicken and cheese tortellini, mixing well to combine.
Reduce the heat to medium, cover with a lid, and let cook for about 5 minutes, or until the tortellini is soft and tender. Stir once during cooking to prevent the tortellini from sticking to the bottom of the pot.
Serve warm and garnish with fresh sliced green onions, if desired.
Notes
Both fresh and frozen cheese tortellini work well. If using frozen, you may need to add a couple of extra minutes to the cooking time.
Make sure your cream cheese is fully softened before adding it to the pot. This will help it melt smoothly without leaving lumps.
If you prefer a milder dish, use half the amount of buffalo sauce and add more to taste. For extra spice, toss in a pinch of red pepper flakes, a dash of hot sauce, or use spicier buffalo sauce.
When adding and stirring the tortellini, mix gently to avoid breaking them. Over-stirring can cause them to lose their shape.
Save time by using shredded rotisserie chicken or leftover cooked chicken to make this recipe even quicker.