Place frozen meatballs into the pot of the electric pressure cooker. Top with uncooked egg noodles and then the sliced mushrooms. Sprinkle with the seasonings and Worcestershire sauce.
Pour the beef broth over everything. Do not stir. Place the lid on the electric pressure cooker and set the valve to sealing. Pressure cook on high for 5 minutes.
Quick release the pressure when the cook cycle is complete. Stir the sour cream into the pasta and serve.