2Heat 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.
3Pour 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.
4Spread and flatten polenta into a 9-inch pie plate, forming a crust. Cool to room temperature.
5Layer diced tomatoes into the cooled crust; top with onion mixture. Sprinkle Parmesan cheese over filling.
6Bake in the preheated oven until cheese is melted, about 10 minutes.
Footnotes
Tip
Aluminum foil helps keep food moist, ensures it cooks evenly, keeps leftovers fresh, and makes clean-up easy.
Ingredients
4 servings
168 cals
1 tablespoon lemon-infused olive oil
1/3 cup diced sweet onion
1/3 cup diced green bell pepper
2 cloves garlic, chopped
2 sprigs fresh oregano, leaves stripped and finely chopped