01 -
Pull the mushrooms out and sprinkle some more Parmesan on top right before you put them on plates.
02 -
Toss the stuffed mushrooms back in the oven and leave them until the cheese bubbles and turns golden, around 15 to 20 minutes.
03 -
Scoop the cheese spinach mix into the roasted mushroom bowls. Sprinkle shredded mozzarella on each one.
04 -
In a bowl, mix the spinach stuff with ricotta, Parmesan, salt, pepper, and nutmeg if you're using it. Give it a good stir so everything blends together.
05 -
Toss the spinach into the pan, stir it around till it's wilted (should be a couple of minutes). Take it off the heat and let it chill for a bit.
06 -
Heat the rest of the olive oil in a big pan over medium. Toss in the garlic and onions, cook until they look soft – about 3 to 4 minutes.
07 -
Rub both sides of the mushroom tops with olive oil and lay them on the baking sheet, gill side facing up. Stick them in the oven for 10 minutes. They’ll start sweating water.
08 -
Turn on your oven to 375°F (190°C). Cover a sheet pan with parchment paper.