Add the minced garlic and cook for 1 minute until fragrant. Press ‘Cancel’.
Add the chopped red bell peppers, diced tomatoes (with juice), vegetable broth, basil, oregano, salt, and pepper to the inner pot. Stir to combine.
Secure the lid and set the vent to Sealing. Select Manual or Pressure Cook on High for 8 minutes.
When the cooking cycle finishes, allow a Natural Pressure Release (NPR) for 10 minutes, then carefully move the valve to Venting to release any remaining pressure.
Remove the lid. Stir in the heavy cream and sugar, if using.
Use an immersion blender to blend the soup directly in the pot until completely smooth and creamy. Alternatively, carefully transfer the soup in batches to a regular blender and blend until smooth, then return to the pot.
Taste and adjust salt and pepper as needed before serving hot.
Notes
For a deeper flavor, you can roast the red peppers before adding them, though this adds prep time.