Step 1

Turn on a multi-functional pressure cooker (such as Instant Pot®) and select Saute function. Add oil, sausage, onion, and anchovies to the Instant Pot® once hot. Cook and stir, breaking up sausage until browned, about 5 minutes. Mix in bell pepper, mushrooms, and olives; stir to combine. Cancel Saute function.

Step 2

Scatter pasta evenly on top of sausage mixture. Pour in red wine. Spread pasta sauce evenly on top of the pasta, but do not stir.

Step 3

Close and lock the lid. Select high pressure according to manufacturer's instructions; set timer for 8 minutes. Allow 10 to 15 minutes for pressure to build.

Step 4

Release pressure using the natural-release method according to manufacturer's instructions, about 20 minutes. Release remaining pressure carefully using the quick-release method, about 5 minutes. Unlock and remove the lid.

Step 5

Sprinkle mozzarella cheese, garlic powder, Italian seasoning, salt, and pepper on top of the pasta. Stir to incorporate. Serve immediately.