Place cream cheese, vegenaise, spinach, nutritional yeast, lemon juice, garlic powder, and onion powder in a mixing bowl. Mix well, then stir in salt and pepper to taste.
Serve cold or place in a greased 8"x8" baking dish and bake at 350°F for 20-25 minutes, until hot and bubbly. You can also sprinkle some vegan mozzarella on top before baking!