Step 1: Warm olive oil in a Dutch oven and add diced onions and carrots. Stir and cook until softened.
Step 2: Add minced garlic, arrowroot. Drop in the cauliflower florets, chopped broccoli, vegetable broth, and coconut milk.
Step 3: Simmer covered until the veggies become tender. Add the lime juice and stir.
Step 4: Once vegetables are tender, use a stick blender to puree part of the mixture.