Puff Pastry Mushroom Gruyere Tart

Name: Puff Pastry Mushroom Gruyere Tart
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Ingredients: 1 sheet Puff pastry (thawed); 1 heaping cup Gruyere cheese (shredded); 12 ounces Mushrooms (sliced); 1 tbsp Butter; 1 tbsp Olive oil; 3 twigs Thyme (fresh); ½ tsp Salt (or to taste); 1 dash All purpose flour (for dusting); 1 qty Egg for egg wash

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Would you LOOK at all those mushrooms? If you're a mushroom lover (like me), you're going to simply love this small savory tart. Loaded with mushrooms and gruyere cheese, this Puff Pastry Mushroom Gruyere Tart is perfect for entertaining and tastes amazing!

Puff pastry square with mushroom centered in photo

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Ingredients
Instructions
Variations
Equipment
Storage
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FAQ
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Food Safety

Ingredients

Puff pastry - Make sure to complete thaw it in the refrigerator before using it in this recipe.
Cheese - I really love gruyere cheese in this dish.
Mushrooms - We use white mushrooms for this tartlet.
Butter - Unsalted butter will add additional flavor to the mushrooms.
Olive Oil
Thyme - Fresh thyme is the perfect herb for mushrooms.
Flour - We use the all-purpose variety in this recipe
Egg - We only use a little bit of the egg to brush onto the outer edges. The eggwash is what gives the pastry the perfectly browned edges.
Salt

Note: Refer to the recipe card below for exact quantities.

Instructions

Time needed: 40 minutes.

How to Make Puff Pastry Mushroom Gruyere Tart

Step 1
Prepare the Pastry
The puff pastry should be completed thawed in the refrigerator and the oven will need to be preheated to 400 degrees F. After lightly dusting some flour onto your work surface, you will need to lay out the pastry and make serrated edges with a knife or pizza cutter, leaving about ½ inch around each edge. One cup of shredded gruyere cheese should be spread out over the pastry leaving the border clean.
Step 2
Prepare the Mushrooms
After mushrooms are prepped and clean, saute them in a little olive oil and butter for 6-8 minutes. Drain any excess liquid when finished, then spread them out across the cheese.
Step 3
Prepare an Egg Wash
Prepare an egg wash by whisking egg yolk and 2T of water. After the pastry bakes for about 15 minutes, use a pastry brush to lightly brush egg wash over the border. Return to oven and bake 5-10 more minutes until it turns light brown in color.
Step 4
Assemble and Serve
Remove from the oven and garnish with thyme (if desired). Cut pastry into four pieces and serve warm.

Variations

Add-ins - Caramelized onions would make a nice addition to this pastry.

Equipment

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Pastry sheet
Pastry brush
Cheese grater
Pizza Cutter
Fry pan
Baking sheet
Parchment paper
Colander

Storage

Store in the refrigerator in an airtight container for 2-3 days.

This dish is not freezer friendly.

More Recipes

Have leftover ingredients?

Gruyere cheese is great in French Onion Soup. It also makes a killer grilled cheese!

In the mood for a similar dish?

Heirloom Tomato and Asparagus Quiche with Gruyere Cheese

More holiday and entertaining recipes you will love:

FAQ

Can you reheat puff pastry?

The simple answer is yes, but it will lose some of its crispy texture. Puff pastry can be reheated in an air fryer, in the oven, or in the microwave. Make sure that you don't store your puff pastry for more than a few days in the refrigerator because it can develop mold.

Should you wash mushrooms?

There are differing opinions on this. If mushrooms look fairly clean, then a damp cloth should work just fine to clean them up a bit. If they are really dirty, you can try shaking them clean in a colander, but you may have to result to washing them under water.

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