lasagna

Directions :

1. Set Instant Pot to Saute and heat oil. Add onion and cook until softened, 4 to 6 minutes. Add oregano and crushed red pepper flakes and cook until fragrant, 1 minute more. Add beef and cook, stirring occasionally, until no pink remains. Season with salt and pepper.
2. Using a slotted spoon, remove beef and place in a large bowl. Add 2 1/2 cups marinara to meat and toss to combine. Remove the Instant Pot bowl and clean.
3. In a medium bowl, stir to combine ricotta, egg, Parmesan, and basil and season with salt and pepper.
4. Build lasagna: Spray an 8" springform pan with cooking spray. Spread 1/4 cup marinara in the bottom of the pan. Add a layer of noodles, trimming to fit the pan, then top with 1/2 the ricotta mixture. Add 1/2 the meat mixture and sprinkle with 1/2 cup mozzarella. Add another layer of noodles, then add the remaining ricotta mixture and meat sauce in even layers. Top with more noodles, remaining 1/4 cup marinara, and remaining mozzarella.
5. Add 1 1/4 cup water to the bottom of Instant Pot, then fit with a trivet. Place lasagna on the trivet and secure lid. Set Instant Pot to high and cook for 22 minutes. Let pressure release naturally for 10 minutes, then quick release.
6. If desired, set oven broiler to high and broil until golden, 2 to 3 minutes. Let cool 10 minutes, then garnish with basil before serving.