Heat oven to 400°F.
Lightly spray 9-inch glass pie plate with cooking spray.
Unroll 1 can of pizza crust dough.
Place dough in pie plate; press against bottom and side of pie plate to form crust.
In small bowl, mix pizza sauce and mushrooms; spoon onto dough in pie plate.
Layer with olives, ¾ cup of the mozzarella cheese, the spinach and remaining ¾ cup mozzarella cheese.
Unroll remaining can of dough.
Press dough into 9-inch round; place over filling.
Pinch edges of dough together to seal; roll up edge of dough or flute to form rim.
Cut several slits in dough.
Brush with oil; sprinkle with Parmesan cheese.
Bake 35 to 40 minutes or until deep golden brown.
Cut into wedges.