Instant Pot® Spinach-Egg White Frittata

Instructions

• Turn on a multi-functional pressure cooker (such as Instant Pot®) and select Saute function. Heat oil in the pot and add onion. Cook until onion is soft and translucent, about 3 minutes. Add garlic and cook until fragrant, about 30 seconds. Cancel Saute mode. Transfer onion mixture to a paper towel-lined plate and set aside. Clean the inside of the pot when it is cool enough to handle.
• Whisk egg whites and heavy cream together in a bowl. Stir in spinach, Parmesan cheese, salt, pepper, and garlic powder until well blended. Add reserved onion mixture and stir until well combined.
• Pour water into the pot and place a steamer rack trivet in the bottom. Spray a souffle dish or other heat-proof dish with nonstick spray. Pour egg mixture into the prepared dish and cover loosely with foil. Place the dish on top of the trivet.
• Close and lock the lid. Select High pressure according to manufacturer's instructions; set timer for 30 minutes. Allow 6 to 7 minutes for pressure to build.
• Allow the pressure to release naturally for 10 minutes according to manufacturer's instructions, then release remaining pressure carefully using the quick-release method, about 5 minutes. Unlock and remove the lid. Remove foil from the frittata and pour off any excess liquid before slicing and serving.