Preheat oven 375.
Place tortilla on a baking sheet, sprayed lightly with nonstick spray. Bake in the oven for the 5 to 6 min on each side, until slightly crispy leave oven on.
In a small bowl, mix ricotta cheese, mozzarella cheese garlic powder 1/8tsp salt and pepper. Set aside.
Bring a pan sprayed with nonstick spray to medium heat on the stove. Add onions and stir occasionally, cook until softened and slightly browned, about 3 minutes. Immediately stir onions into cheese mixture.
Spread cheese-onion mixture evenly on top of pizza crust. Place basil leaves on cheese-onion mixture. Top with tomato slices and then sprinkle with dash of salt.
Return pizza to the oven and bake for about 5 minutes or entire pizza is hot.
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