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Export 10 ingredients for grocery delivery
Set your pressure cooker to SAUTE. Drizzle with oil, then add the ground beef and saute 4-5 minutes, breaking beef into pieces as it cooks, until browned.
Stir in Italian seasoning and garlic for 1 minute longer. Transfer ground beef to a bowl and cover tightly to keep warm.
Add marinara, water, broth, noodles, onion powder, and red pepper flakes (if using) to the pot and give it a good stir.
Place the lid on the pot and slide it into the locked position and turn the vent valve to the sealed position.
Set to PRESSURE COOK or MANUAL for 8 minutes.
Do a QUICK RELEASE (immediately turn the vent valve to VENT position) and remove the lid once the float valve drops.
Stir in ground beef and mozzarella cheese. Once cheese is melted and incorporated, add salt and pepper to taste.
Garnish with fresh parsley, basil, or thyme if desired and serve.