Heat oven to 425. Lightly spray a cookie sheet w/ olive oil cooking spray. In skillet, over med-high heat, saute garlic and spinach in oil for 5 mins.
In lg bowl, combine ricotta and mozzarella cheeses, oregano and salt. Add spinach mix, mix well. Unroll dough onto floured surface into a long rectangle.
Cut rectangle in 1/2 to make 2 rectangles. Spread spinach mix evenly onto both rectangles. Fold each piece of dough over, pinch edges to seal. Place on baking sheet. Bake 10-12 mins, or until golden. Serve w/ pasta sauce.