Preheat the oven to broil and bring a pot of salted water to a boil.
1 pot of boiling salted water
Heat an ovenproof skillet to medium heat and add 1 Tablespoon of olive oil.
1 tablespoons olive oil
Add the fresh cheese ravioli to the skillet and sauté for about 3 minutes until they develop some brown spots. Use tongs to turn them after about 1-½ minutes.
10 ounces fresh cheese ravioli
Remove from the skillet and drop them in the pot of boiling water for about 4 minutes.
Drain and set aside.
Using the same skillet, bring 3 Tablespoons of the compound herb butter to a nice bubble over medium heat. Pay attention to not burn the butter. Adjust heat accordingly.
3 tablespoons compound herb butter
Add mushrooms and sauté in the butter for about 4 minutes.
4 ounces Portobello mushrooms, cut into ½" pieces
Add the well-drained ravioli and half of the finely grated cheese to the pan, and gently mix.
1 ounce Parmigiano-Reggiano, finely grated
Sprinkle the remaining cheese on top, place the skillet under the broiler for about 5 minutes. We like to wait until the broiler nearly burns some of the top ravioli and cheese, increasing the crispy texture and woodsy flavor.
1 ounce Pecorino-Romano, finely grated
Carefully remove the skillet from the oven. Let cool a few minutes and serve. Enjoy!