Drizzle with olive oil, and coat the crust.
Using a large spoon, spread the ricotta cheese around the dough, leaving a 1" border.
Top with chopped spinach, mushrooms, tomatos, black olives, and mozzarella cheese. Sprinkle with onion and garlic powder and salt.
Bake at 425 for 15 minutes (until the crust is golden brown)