Prepare the Instant Pot: Start by placing 8 oz of penne pasta into your Instant Pot. Ensure the pasta is evenly spread at the bottom.
Add liquids: Pour 1 1/4 cups of chicken broth and 1 1/4 cups of heavy cream over the pasta, pressing the noodles down gently to ensure they are submerged in the liquids.
Incorporate the sauce and spices: Spoon 1 cup of red pasta or marinara sauce on top without stirring. Then, sprinkle 1 tsp of garlic powder, 1/2 tsp of salt, 3/4 tsp of dried basil, and 1/4 tsp of red pepper flakes over the sauce.
Cook the pasta: Securely close the Instant Pot lid and set it to cook on high pressure for 5 minutes.
Release pressure: Once the cooking time is completed, perform a quick release to let the steam escape.
Final touches: Carefully open the lid and stir the mixture until well combined. Let it sit for 5-8 minutes to allow the sauce to thicken slightly. Taste and adjust the seasoning if needed.
Serve: Top your pasta with shredded Parmesan cheese and fresh basil before serving. This adds a perfect finishing touch and balances the flavors.