Preheat the oven to 375°F (190°C). Grease a 2‑quart baking dish and set aside.
Prepare the jackfruit: drain and rinse the jackfruit well, remove any hard core pieces and seeds, then shred the flesh into bite‑sized strips; set aside.
Heat 1 teaspoon olive oil in a sauté pan over medium heat. Add the diced onion and cook about 3 minutes until translucent.
Add the minced garlic, dried parsley, dried dill, and black pepper to taste; sauté 1–2 minutes until fragrant. Remove from heat.
Transfer the cooked onion mixture to a blender and add the vegan cream cheese, silken tofu, buffalo hot sauce, nutritional yeast, and tahini (if using). Blend 45–60 seconds until thick and smooth.
Assemble the dip: spread the shredded jackfruit in the prepared baking dish, pour the blended sauce over it, and stir with a spatula until evenly combined and the top is smooth.
Bake on the top rack for 25–30 minutes until heated through. For a crisper top, broil 3–5 minutes while watching closely.
Let the dip cool for about 10 minutes to thicken, garnish with sliced green onions if desired, and serve warm.