Tuna Noodle-Less Casserole
Preheat oven to 350 F (175 C). Place all casserole ingredients (veggies and tuna) in large casserole dish or 9×13 baking dish. Gently mix to combine.
Add water, cashews, garlic, nutritional yeast, oil, coconut flour, and seasonings to blender. Blend for 1-2 minutes until smooth. Add egg and blend for another 15-30 seconds. Pour sauce mixture over veggies/tuna and mix gently until completely combined and sauce is evenly distributed throughout veggies/tuna. Gently pat down top of mixture with back of spatula until the surface is level.
Cover dish tightly with foil and bake for 50 minutes, covered. After 50 minutes, remove foil, and return to oven to bake (uncovered) for another 10 minutes.
Remove from oven and let sit for 10 minutes before serving.