Drizzle 1 tablespoon of olive oil in the bottom of a large baking dish. Add onion, garlic, a few sprigs of thyme, a handful of basil, tomatoes, red pepper, and crushed red pepper flakes to the dish.
Drizzle ingredients with 1 more tablespoons of olive oil. Season with salt and pepper to taste.
Roast in the oven for approximately 35-40 minutes or until tomatoes and bell peppers are charred.
In a medium pot bring vegetable or chicken stock to a simmer.
Remove thyme stems from from the baking dish. Add roasted veggies to the broth. Remove from heat and use an immersion blender to blend until desired consistency.
Add heavy cream to the soup and blend again to combine.
Ladle into bowls, garnish with fresh basil leaves (optional), and serve warm.
Video
Notes
A traditional blender can be used to blend roasted veggies, broth, and cream. Simply return the blended soup to the saucepan to warm before serving.