Preheat oven to 400°F. Spray pan with cooking spray, using a 13" x 9" nonstick baking sheet or 12" nonstick pizza pan for a thin, crispy crust or an 11" x 7" nonstick pan or a 10" cast iron skillet for a deep-dish crust.
In a small mixing bowl, combine all ingredients. Mix with electric mixer (using regular beaters) for 2 minutes. Batter will be like soft cookie dough and very sticky.
Spread batter in prepared pan, using a wet spatula to smooth the dough and push it up to, but not touching, the outer edges of pan. Make a little ridge around the edge to contain the pizza sauce and toppings.
Bake for 15 minutes. Remove from oven, top with toppings, and bake another 10-15 minutes or until browned to taste. If using eggs, the batter will rise and fall during baking.