3/4 cup shredded sharp white cheddar cheese 3/4 cup shredded Gruyère cheese 1/2 cup grated Parmigiano Reggiano cheese (I used Locatelli Romano, use what you have) 1 tablespoon fresh thyme leaves, chopped Directions: Preheat the oven to 450°F. Using a large skillet, on medium, heat the...