Chop all the vegetables and herbs if using.
Turn on the saute button of the Instant Pot.
When it says hot, add butter and oil to it .
Add minced garlic and saute till it looks caramelized.
Add all the vegetables and saute them for one minute .Start with chopped onion and then add other vegetables.
Add tomato sauce/puree black pepper ,salt,brown sugar and red pepper flakes.
Saute till the oil separates.It wont take more then 1-2 minutes.
Add Tortellini ,to the Instant pot .
Add water to the Instant Pot.
Switch off the saute button.
Close the lid of the Instant Pot and pressure cook for 3 minutes.
Release the steam manually. Add cream after removing the lid.
Stir to mix everything.
If the sauce is too thick for your taste use hot water to make it thin.
Serve them in a bowl and enjoy.