On the instapot press saute, Whence it reads hot add the butter and foam out
Add the diced onion and jalapeno, cook until translucent and taking color; ~6-8 minutes, stir occasionally
Add roasted garlic, cook for until fragrent ~1-2 minutes
Add tomatoes, broth, salt and pepper, basil flakes.; Close lid and lock
Cancel the Saute' mode and select pressure cook, set to 5 minutes
After the pressure cook mode is complete let the pressure release naturally, ~15 minutes)
Once the pressure pin in the lid drops, open the lid and use an immersion blender to puree to a smooth consistency. (USE CAUTION, the soup is hot.)
Add the heavy cream and stir to blend
Taste and balance flavor