Roasted Veggie & Gruyere Cheese Tart

Ingredients

• 1 package frozen puff pastry (2 pieces)
• 1 zucchini, thinly sliced
• 1 red pepper, thinly sliced
• 1 yellow pepper, thinly sliced
• ½ red onion, thinly sliced
• 2 cloves garlic, roasted
• 1 tablespoon extra virgin olive oil
• Kosher salt
• freshly ground black pepper
• 2 cups sliced mushrooms (dry wild mushrooms or pick your favourite - yes pun intended)
• A few tablespoons all-purpose flour
• 1 egg beaten with 1 teaspoon water
• ¼ cup grated Gruyere cheese
• ¼ cup grated Parmigiano-Reggiano - Parmesan cheese
• 1 egg
• ½ cup heavy cream, 35% or half and half cream or milk, if you prefer
• ¼ teaspoon sea salt
• ¼ teaspoon freshly ground black pepper