Preheat your oven to 180°C (350°F). Lightly grease a 9x13 inch baking dish to prevent sticking.
Cook the pasta in a large pot of salted boiling water until just al dente, about 1-2 minutes less than package instructions. Drain and set aside.
In a large bowl, combine the cooked pasta with tomato sauce, dried oregano, and a pinch of salt and pepper. Mix well to coat all the pasta evenly.
In a blender, add soaked cashews, minced garlic, lemon juice, a splash of plant milk, and a pinch of salt. Blend until smooth and creamy, about 1-2 minutes, stopping to scrape down sides as needed.
Pour the cashew cream over the pasta mixture, folding gently to combine everything evenly. Spread the mixture into your prepared baking dish.
Sprinkle the grated vegan cheese generously over the top, ensuring even coverage for that cheesy crust.
Place the dish in the oven and bake for 25-30 minutes, or until the top is golden and bubbling with a crispy edge.
Once baked, remove from the oven and let rest for 5 minutes to allow the sauce to set slightly.
Garnish with fresh herbs if desired, then serve hot and enjoy the irresistibly cheesy, crispy-topped vegan pasta bake.