Prep Veggies: Peel and cut the green plantain and parsnip into chunks.
Sauté: In a pot, heat olive oil over medium-high. Add garlic and shallots. Sauté until caramelized.
Add Roots: Toss in the plantain and parsnip. Stir-fry for 2 minutes.
Simmer: Add broth and bay leaves. Bring to a boil, then cover and simmer on low for 30–40 minutes, until vegetables are soft.
Blend: Remove bay leaves. Add chickpeas and oat cream. Blend with an immersion blender (or use a countertop blender) until silky smooth. Season with salt and pepper.
Make Chips: Thinly slice a green plantain. Lightly salt both sides. Fry in oil at 170°C/340°F until golden and crispy. Drain on paper towels.