Make the Creamy Mixture: Press the tofu to remove excess moisture. Blend the tofu, tapioca starch, nutritional yeast, lemon juice, and plant-based milk until smooth. Set aside.
Prepare the Filling: In a large pan, sauté the onion and garlic with a bit of water and a pinch of salt until translucent. Add the diced red and green bell peppers, cooking until soft.
Add Creamy Mixture to Filling: Pour the tofu-based creamy mixture into the pan with the sautéed vegetables. Cook for about 5 minutes, stirring occasionally, to allow the mixture to thicken.
Combine with Corn and Seasonings: Stir in corn, paprika, nutmeg, garlic powder, salt, and pepper. Make a slurry by mixing two tablespoons of cornstarch with an equal amount of water. Pour the slurry into the pan while stirring continuously. Cook until the filling thickens slightly and everything is well combined and heated through. Let it cool down a little.
Assemble the Pie: Preheat your oven to 400°F (200°C). Spread the corn and vegetable mixture into the pre-baked pie crust. Optionally, you can add some vegan parmesan or other vegan cheese.
Bake the Pie: Bake in the preheated oven for 25 to 30 minutes, or until the crust and the top of the pie are golden and the filling is set.
Serve: Let the pie cool before serving.