Cook pasta according to package directions until al dente, then rinse.
Meanwhile, add cashews and water and blend in a high-speed blender*.
Add rest of sauce ingredients to a blender and blend until smooth.
Add pasta and sauce to oven safe pan or casserole dish.
Top with breadcrumbs.
Bake for 20 minutes or until breadcrumb topping is browned.
Video
Notes
Oil-free version - You can omit the oil in the breadcrumb topping to keep this recipe oil-free. The oil prevents the bread from burning in the oven, so only add the topping in the last 5 minutes of baking.See Tips and Variations above for more options.* I use a high speed blender like a Vitamix when blending the cashews.