Cook gnocchi according to package directions. Meanwhile, in a large skillet, heat oil over medium-high heat; cook sausage and shallots until sausage is browned and shallots are tender. Add garlic; cook 1 minute longer., Stir in wine. Bring to a boil; cook until liquid is reduced by half, 3-4 minutes. In a small bowl, mix cornstarch and broth until smooth; stir into sausage mixture. Return to a boil, stirring constantly; cook and stir until thickened, 1-2 minutes. Add spinach and cream; cook and stir until spinach is wilted., Drain gnocchi; add to pan and heat through. Sprinkle with cheese.