In a medium bowl, combine tomatoes, cheddar cheese, onion, garlic powder, oregano, salt, and pepper. Mix together until all ingredients are well combined.
In a small bowl, mix together Parmesan cheese and mayonnaise until well combined.
Spread tomato mixture evenly into the bottom of the unbaked pie crust.
Spread Parmesan-mayonnaise mixture evenly over the top of the tomato mixture.
Bake in preheated oven for 25 to 30 minutes, or until crust is golden brown and filling is bubbly.
Remove from oven and let cool for 10 minutes before serving.
Interesting Facts
Tomato pie is a popular dish in the southern United States, and can be served as either a savory appetizer or a main dish.
Tomatoes are a great source of Vitamin C, as well as fiber, folate, and potassium.
This recipe is a great way to use up leftover tomatoes from the garden.