Set oven to 420F / 216C.
Line a baking tray with parchment and add butternut squash, onion, and garlic. Drizzle with oil then add thyme, sea salt & pepper. Toss everything together and ensure the veggies are coated.
Bake for 25 – 30 minutes or until the edges of the veggies are seared, not burnt.
Add the veggies to a blender and pour in broth. Process until smooth, about 3 – 5 minutes.
Alternatively, you can add everything to Dutch oven pot. Set the heat to low-medium, then use an immersion blender to process the soup. This may take a bit more time and patience to get it smooth but it works well.
Pour the soup into a pot set on low heat. Add the frozen corn, stir, and garnish.
You can enjoy this soup immediately while hot or when it is cold, straight out of the fridge! I like to enjoy mine with blackened salmon.