Heat oil on medium heat, then add onion and cook until soft, about 3 minutes.
Add garlic, ginger, bell pepper, green onions, thyme, Scotch bonnet pepper, allspice, and cook until fragrant, about 2 minutes.
Add coconut milk, vegan bouillon taro, and stir.
Bring to boil, reduce to simmer, and cook until sauce thickens, about 10-15 minutes, serve immediately.