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gnocchi au gratin in serving bowl
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4.80 from 39 votes

Easy Gnocchi Recipe (Au Gratin)

The pillowy gnocchi in this easy gnocchi recipe au gratin is transformed with a rich, velvety white cheese sauce. Serve it as an appetizer, side or main dish using fresh store-bought gnocchi for a great shortcut. 
Prep Time12 mins
Cook Time10 mins
Total Time22 mins
Course: Main Course
Cuisine: Italian
Servings (change as needed): 3 mains (see note 2)
Author: Cheryl


  • 1 package gnocchi, fresh or defrosted 375-500 g or 13-16 ounces
  • 1/4 cup (22.5g) grated fresh Parmesan cheese
  • 1 tablespoon chopped parsley for garnish

White Cheese Sauce

  • 1 1/2 tablespoon butter salted or unsalted butter is fine
  • 2 tablespoon all purpose flour
  • 1 garlic cloves, minced (or 1/4 tsp garlic powder)
  • 1 teaspoon poultry seasoning or more to taste
  • 1/2 teaspoon salt (or to taste)
  • pinch black pepper
  • pinch nutmeg optional
  • 1 1/2 cup (375ml, 12 oz) milk, 2% or whole (1/4 cup of this can be light or heavy cream for extra richness)
  • 1 cup (83g) grated white cheese e.g. Gruyere, Fontina, Emmenthal, Monterey Jack, Provolone
  • 1/4 cup chopped green onion


  • PREHEAT OVEN to 400F/204C. Spray a small 7-8 inch/18-20cm ovenproof baking dish with olive oil or cooking spray
  • BOIL GNOCCHI: Bring salted water to boil in medium saucepan. Put gnocchi in boiling water, bring water back to boil, and lower heat to med heat. Gently boil for 2 minutes. Drain gnocchi and set aside.
  • MAKE CHEESE SAUCE: Melt butter on medium heat in a medium or large saucepan. Add garlic and stir for 30 seconds. Add flour and seasonings, stirring for 2 minutes. Add milk (and cream if using), whisking until slightly thickened, about 4-5 minutes. Turn off heat. Stir in grated cheese until smooth sauce is formed. If too thick, add a bit more milk (but note that sauce will thicken further with baking and standing). Taste and adjust seasonings. Stir in gnocchi and green onions.
  • ASSEMBLE AND BAKE/BROIL: Spoon mixture into prepared gratin dish. Sprinkle 1/4 cup Parmesan cheese and chopped parsley over the surface. Bake for 7 minutes, then broil for 3 minutes to brown, watching to ensure it doesn't burn. Let stand for a few minutes (sauce will thicken more) and serve with toothpicks as an appetizer or as a side or main dish.


  1. Make Ahead: Follow instructions above to boil gnocchi and make cheese sauce, including mixing in gnocchi and green onions. Pour mixture into prepared dish. Cover and refrigerate for up to 2 days. When ready to use, sprinkle Parmesan and chopped parsley over surface. Bake in preheated 400F oven for 20-25 minutes. Broil for 2-3 minutes if further browning is needed.
  2. Servings: Makes 6-8 appetizer servings, 2-3 mains, 4-5 sides.
Nutrition values are estimates for a main dish serving. They will be considerably lower for sides and appetizers. 
Serving: 0g | Calories: 536kcal | Carbohydrates: 56g | Protein: 22g | Fat: 26g | Saturated Fat: 16g | Cholesterol: 74mg | Sodium: 1270mg | Potassium: 221mg | Fiber: 3g | Sugar: 7g | Vitamin A: 1035IU | Vitamin C: 4mg | Calcium: 539mg | Iron: 5mg