combine ricotta, eggs, oregano, salt, and pepper-mix well spread half of ricotta mixture over bottom of crust sprinkle with parmesan cheese arrange a layer with half of the sliced tomatoes sprinkle with parmesan cheese spread remaining ricotta mixture over tomatoes sprinkle with parmesan cheese arrange remaining tomatoes on top sprinkle with remaining parmesan cheese bake @ 180ºC or 60 minutes, just until golden remove from oven and allow to cool 30 minutes, before cutting garnish with an oregano sprig serve warm or at room temperature ----