Creamy Gnocchi with Italian Sausage

25min · 4 servings ▢1, 16 oz. pkg. gnocchi ▢1 Tbsp. olive oil ▢1/2 shallot, minced ▢3 cloves garlic, crushed ▢1 lb. hot Italian sausage ▢2 Tbsp. butter ▢2 Tbsp. flour ▢1 1/2 cups whole milk, room temperature ▢1/2 cup heavy cream, room temperature ▢1/2 tsp. salt, plus more to taste ▢2 Tbsp. fresh sage, chopped ▢pepper to taste ▢1/2 cup Parmesan, freshly grated full recipe is on krollskorner.com, search "gnocchi"