Mushroom Gnocchi Casserole

This Mushroom Gnocchi Casserole is perfect comfort food. It freezes well so you can make it ahead and reheat on short notice!

It doesn’t get much easier than this. Gnocchi has a long best before date so it is easy to keep some on hand. Fresh mushrooms are a must but the other ingredients you probably have on hand. And you can buy them pre-sliced to make prep a breeze.

It doubles easily so you can make a batch to serve and one to freeze. Just saute the mushrooms for each batch separately so they are not overcrowded in the pan.

Chef’s Tips

  • If you like mushrooms and want to amp up the mushroom flavour you can reconstitute .5 oz of dried porcini mushrooms and add them to the fresh mushrooms. The mushroom water (without the sediment from the mushrooms) can also be used to thin the sauce and add depth of flavour. See the recipe Variation note.
  • There are not many ingredients here so the Parmesan and Parsley garnish are important.
  • Liquid will be absorbed by the gnocchi so it is important to add either the mushroom water, cooking water or more warmed cream to the mixture just before baking if it looks dry.
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Mushroom Gnocchi Casserole
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Course Main Dish
Cuisine Italian
Prep Time 30 minutes
Cook Time 55 minutes
Servings
servings
Ingredients
  • 3 Tbsps olive oil divided 2 + 1
  • 2 Tbsp butter divided 1 + 1
  • 1 lb cremini mushrooms sliced
  • 3/4 tsp salt divided 1/2 + 1/4
  • 1/4 tsp black pepper
  • 1 large onion thinly sliced
  • 1 tsp dried rosemary
  • 1 lb gnocchi
  • 3 cloves garlic minced
  • 1/2 cup dry white wine
  • 2 Tbsp flour
  • 2 cups 10% cream
  • 2 Tbsps fresh parsley
  • freshly grated Parmesan
  • 1 .5 oz pkg dried porcini mushrooms Optional - See the Variation note
  • boiling water Optional -See the Variation note
Course Main Dish
Cuisine Italian
Prep Time 30 minutes
Cook Time 55 minutes
Servings
servings
Ingredients
  • 3 Tbsps olive oil divided 2 + 1
  • 2 Tbsp butter divided 1 + 1
  • 1 lb cremini mushrooms sliced
  • 3/4 tsp salt divided 1/2 + 1/4
  • 1/4 tsp black pepper
  • 1 large onion thinly sliced
  • 1 tsp dried rosemary
  • 1 lb gnocchi
  • 3 cloves garlic minced
  • 1/2 cup dry white wine
  • 2 Tbsp flour
  • 2 cups 10% cream
  • 2 Tbsps fresh parsley
  • freshly grated Parmesan
  • 1 .5 oz pkg dried porcini mushrooms Optional - See the Variation note
  • boiling water Optional -See the Variation note
Mushroom Gnocchi Casserole
Votes: 0
Rating: 0
You:
Rate this recipe!
Instructions
  1. Heat 2 Tbsp oil and 1 Tbsp butter in a large skillet over medium-high heat. Add mushrooms, 1/2 tsp salt and 1/4 tsp pepper. Cook for about 10 minutes till mushrooms have released their liquid and are lightly browned. Variation - see the note below if you want to add more mushroom flavour with reconstituted porcini mushrooms.
  2. Transfer to a large bowl.
  3. Bring a large pot of salted water to a boil and cook gnocchi according to manufacturer's instructions. Do not overcook. Cook just until they rise to the surface. Remove with a slotted spoon and reserve cooking water. Drain gnocchi well and transfer to a large bowl. Add remaining Tbsp oil to the gnocchi, stir well and allow to cool.
  4. While gnocchi is cooking melt remaining butter in the skillet over medium heat. Add onion, rosemary and 1/4 tsp salt. Cook for about 5 minutes til softened. Reduce heat and cook another 20 minutes til golden.
  5. Add garlic to the onions in the skillet and cook another 3 minutes. Increase heat to medium-high and add wine. Bring to a boil, scrape up any brown bits from the skillet bottom and cook unti wine has reduced by about half.
  6. Heat cream lightly in the microwave. Sprinkle the flour over the onion mixture and stir to coat well. Add the cream and cook about 5 minutes until cream thickens. Check seasoning and adjust salt and pepper to taste.
  7. Pour the cream sauce into the mushrooms in the bowl. Pour the mushroom sauce over the gnocchi. You want it to be quite saucy so add a bit of the cooking water to moisten the mixture if desired. (Some of the liquid will be absorbed during baking.)
  8. Preheat oven to 350 degrees. Spray a 9 cup casserole dish with cooking spray. Add the gnocchi mixture and bake covered for about 45 minutes. Remove cover and bake another 10 minutes to allow top to brown.
  9. Serve with Parsley and Parmesan for garnish.
  10. To make ahead and freeze - divide mixture between desired number of casserole dishes, sprayed with cooking spray. Cover and freeze up to a month. To serve allow gnocchi to thaw in the fridge at least 12 hours or up to 2 days. Continue to cook as per above. Note: If mixture seems dry add a little more warm cream and stir well before putting in the oven.
  11. Variation: If you are a mushroom fan consider reconstituting .5 ounce of dried porcini mushrooms in boiling water for 20 minutes. Rough chop the reconstituted mushrooms and add to the pan with the sliced creminis. You can use some of the mushroom water instead of the cooking water, being careful not to get any sediment from the bottom, if you need to make the mushroom mixture more moist when adding the gnocchi.
Recipe Notes

Nutrition Facts
Mushroom Gnocchi Casserole
Amount Per Serving
Calories 525 Calories from Fat 315
% Daily Value*
Total Fat 35g 54%
Saturated Fat 18g 90%
Polyunsaturated Fat 2g
Monounsaturated Fat 11g
Cholesterol 75mg 25%
Sodium 565mg 24%
Potassium 386mg 11%
Total Carbohydrates 38g 13%
Dietary Fiber 3g 12%
Sugars 10g
Protein 9g 18%
Vitamin A 20%
Vitamin C 21%
Calcium 7%
Iron 11%
* Percent Daily Values are based on a 2000 calorie diet.

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