Step 1

Position an oven rack about 8 inches from the broiler element and preheat the broiler.

Step 2

Combine the flour, cornmeal, baking powder, sugar, salt and baking soda in a food processor and pulse to combine. With the motor running, add 1/2 cup water and process, scraping down the sides as needed, until the flour is incorporated and the dough comes together to form a ball that is still slightly sticky.

Step 3

Lightly flour a work surface and your hands. Form the dough into a neat ball between your hands and put on the work surface. Sprinkle with flour and roll into a 10-inch circle.

Step 4

Spread the olive oil in a 12-inch cast-iron skillet to cover the bottom. Put the dough in the skillet and flip so both sides are coated in oil. Top with the desired toppings.

Step 5

Put the skillet over high heat and cook for 5 minutes, then transfer to the boiler and cook until the cheese is melted and golden, about 4 minutes.