To make the soup: IN a 4-quart stockpot, heat the olive oil on medium-high heat. Add the onion and cook for 5-7 minutes, or until translucent. Add the apple and red bell pepper and cook for an additional 2-3 minutes. Add the squash, vegetable broth, thyme, and bay leaf. Bring to a simmer and cook for 15-20 minutes, or until the squash is fork-tender.