Turn the Instant Pot to ‘Saute mode.’ Once it displays ‘hot,’ add oil to the insert. Add bay leaves and sauté for 1 minute. This way, the leaves will release more flavor.
Add chopped onions. Cook for 2-3 minutes until onions are soft and fragrant.
Add chopped carrots and cook for another 2 minutes. Toss in chopped zucchini and mix to combine.
Stir in the tomato puree. Add red chili flakes, rosemary, thyme, fresh basil leaves, and salt to the Instant Pot insert.
Pour in vegetable stock. Stir to combine. Add tamari and brown sugar. Mix until combined.
Finally, add the roasted bell peppers, garlic, and tomatoes to the insert.
Turn the Instant Pot off. Close the lid and seal the pot. Press the Manual or pressure cook button and cook the Instant Pot Butternut squash curry for 8 minutes on HIGH.
Once the cooking time has elapsed, turn off the Instant Pot. Allow the pressure to release naturally. When the pin drops, carefully open the lid. Just before you blend the bisque, remove the bay leaves and discard.
Blend the bisque using an immersion blender until smooth.
Once blended, do the taste test and adjust the spice level. Serve warm with some homemade garlic rolls and topped with fresh parsley leaves and pinenuts.