In a medium bowl mix together Ranch dressing, buffalo sauce, and cream cheese until creamy.
Add pasta to the pot. Pour in chicken broth/water. Top with chicken mixture. Do not stir.
Cook on manual high pressure for 4 minutes. Quick release pressure.
Stir to combine. Top with shredded cheese. Secure lid.
Wait 2-3 minutes for cheese to melt. Remove lid and serve. Garnish with jalapenos and/or green onions.