Vegetarian Polenta Pie Recipe

Preheat oven to 450 degrees F (230 degrees C).

Heat olive oil in a skillet over medium heat; cook and stir onion bell pepper garlic and oregano in the hot oil until softened 5 to 10 minutes. Remove skillet from heat.

Pour water into a pot and bring to a boil; add polenta and a pinch of salt. Whisk and cook polenta until thickened 3 to 5 minutes. Remove from heat.

Spread and flatten polenta into a 9-inch pie plate forming a crust. Cool to room temperature.

Layer diced tomatoes into the cooled crust; top with onion mixture. Sprinkle Parmesan cheese over filling.

Bake in the preheated oven until cheese is melted about 10 minutes.