For the gnocchi, bring about 5 quarts of salted water to a boil.
While waiting for the water to boil, make the chicken.
Put the olive oil and shallots in a large saute pan, and saute until the shallots have started to brown.
Add the chicken and brown on both sides, then remove, set aside and keep warm.
Add the mushrooms and wine to the pan. Reduce by half, then add the butter and the flour. Whisk until thickened, then add the chicken. Cover and reduce heat while the gnocchi finishes.
Add the gnocchi to the water and boil for two more minutes after the gnocchi have returned to the surface.
In the meantime, melt the butter and add the sage.
Drain the gnocchi and mix with the butter. Top with cheese.
Serve the chicken with the gnocchi.
Notes
You can use cooking Marsala if you cannot find real Marsala.If you can't find thinly sliced chicken breast, then use a regular chicken breast, cut it in half, and pound it with an iron skillet.
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