Step 1

Preheat the oven to 450° F. Grease a baking sheet with 1 tsp of the olive oil.

Step 2

Remove the stem from the caps and carefully wash them. Thoroughly clean through the gills or remove them. Pat the caps dry. Rub each cap with the remaining 2 tsp olive oil and season with the salt and pepper. Place them gill side up on a baking sheet.

Step 3

Divide the pizza sauce evenly amongst the portobello caps and spread along the gills. Sprinkle each one with 1/8 tsp of Italian seasoning. Divide the mozzarella cheese evenly amongst the portobello caps and spread evenly. Then top with the tomato slices.

Step 4

Cook them in the oven for 10 minutes or until the cheese is melted and starting to brown. Prepare a large plate covered with a few paper towels to soak up liquid after cooking. When the pizzas are done, carefully transfer them to the paper towel lined plate and let cool slightly.

Step 5

Sprinkle fresh basil and a bit more Italian seasoning if desired on top of each pizza. Serve immediately.