This recipe serves the mushroom ravioli with a classic sage and brown butter sauce but you could also serve the mushroom ravioli with a White Wine Herb Sauce or a Tomato Cream Sauce. What is 00 flour?
For the sauce, in a large saute ... swirl around the butter and let the sage cook until crispy and the butter turns slightly brown. Toss hot gnocchi in butter. Garnish with cheese.
And the final recipe is also a riff on a classic: many Italians stuff pasta like ravioli and tortellini with pureed squash or pumpkin and serve it with a simple sauce of brown butter and sage leaves.